# What are the solutions to x2 − 4 0?

## What are the solutions to x2 − 4 0?

Two solutions were found : x -2.

## Why does X 2 4 0 have no real solutions?

ax2 + bx + c 0 If c and a are both positive, then c / a is positive, and c / a is negative. In either of those cases, we are taking the square root of a negative, which gives us two complex solutions to the quadratic (that is, no real solution). For example, the quadratic equation x2 + 4 0 has no real solution.

## How do you solve x squared 4?

Multiply u22124 – 4 by u22124 – 4 . Add 0 0 and 16 16 . Rewrite 16 16 as 42 4 2 . Pull terms out from under the radical, assuming positive real numbers.

## What is the type of equation of X² 2x 4 0?

Answer: The quadratic equations x2 + 2x – 4 = 0 and x2 – 2x – 4 = 0 have the real solutions. If the roots are real then the equation has the real roots, if the roots are imaginary, then the equation has no real roots. Here, we have complex roots.

## How do you solve an equation in x2?

There is only one (degenerate) solution of this polynomial, x0. You can factor x^2 0 as (x + 0)(x + 0) 0.

## What is the solution of x² 0?

Originally Answered: What is the answer to this x^24? So the solutions are 2 and -2. x2 because if x square is 4, we know that we can just square root 4 to get 2. Since you are trying to isolate the variable, take the inverse operation of whatever is surrounding the variable (in this case an exponent of 2).

## What makes an equation have no real solutions?

A quadratic equation has no solution when the discriminant is negative. From an algebra standpoint, this means b2 x26lt; 4ac. Visually, this means the graph of the quadratic (a parabola) will never touch the x axis. Of course, a quadratic that has no real solution will still have complex solutions.

## Does no real solutions mean 0?

The solution x 0 means that the value 0 satisfies the equation, so there is a solution. No solution means that there is no value, not even 0, which would satisfy the equation.

## What is the discriminant of x 2 x 4 )= 0?

Two solutions were found : x -2.

## What is the answer of X² 4?

x^24 means that (x)(x)4. x2 is an obvious solution, but you need to remember that a negative number multiplied by a negative number yields a positive answer. Thus, (-2)(-2)4 also.

## How do you solve for x squared?

• x2+40 subtract 4 on both sides to get.
• x2u22124 Take the square root of both sides to get.
• xxb12i.

## What type of equation is a quadratic equation?

A quadratic equation is an equation of the second degree, meaning it contains at least one term that is squared. The standard form is axxb2 + bx + c 0 with a, b and c being constants, or numerical coefficients, and x being an unknown variable.

## What are the four types of quadratic equations?

University of Michigan The four methods of solving a quadratic equation are factoring, using the square roots, completing the square and the quadratic formula.

## What are the two types of quadratic equation?

The 3 Forms of Quadratic Equations

• Standard Form: y a x 2 + b x + c yax^2+bx+c yax2+bx+c.
• Factored Form: y a ( x u2212 r 1 ) ( x u2212 r 2 ) ya(x-r_1)(x-r_2) ya(xu2212r1)(xu2212r2)
• Vertex Form: y a ( x u2212 h ) 2 + k ya(x-h)^2+k ya(xu2212h)2+k.

## What is quadratic equation method?

A quadratic equation is an equation that could be written as. ax 2 + bx + c 0. when a 0. There are three basic methods for solving quadratic equations: factoring, using the quadratic formula, and completing the square

## What is the square root of x² 0?

x{2}. The root (zero) of the linear equation x-20 is 2

## Is the equation x² 0 a quadratic equation?

Since given equation is xxb20 . Obviously it is a quadratic equation. yes! any equation of the form Ax^2+Bx+C0 is a quadratic equation.

## What is x²?

x squared is a notation that is used to represent the expression xxd7x x xd7 x . i.e., x squared equals x multiplied by itself. In algebra, x multiplied by x can be written as xxd7x x xd7 x (or) xu22c5x x u22c5 x (or) xx (or) x(x) x squared symbol is x2 .

## What is the discriminant of x2 0?

8
Alan P. The discriminant of x2−2=0 is 8, which means there are 2 Real solutions to this equation.