# What are the roots of x2 2x 4?

## What are the roots of x2 2x 4?

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.

## How do you complete the square x 2 2x 4?

2.3 Solving x2-2x-4 0 by the Quadratic Formula .

## How do you find roots of an equation?

The roots are calculated using the formula, x (-b xb1 u221a (bxb2 – 4ac) )/2a. Discriminant is, D b2 – 4ac. If D x26gt; 0, then the equation has two real and distinct roots. If D x26lt; 0, the equation has two complex roots.

## What are the 2 roots of an equation?

The roots of a function are the x-intercepts. By definition, the y-coordinate of points lying on the x-axis is zero. Therefore, to find the roots of a quadratic function, we set f (x) 0, and solve the equation, ax2 + bx + c 0.

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

2.3 Solving x2-2x-4 0 by the Quadratic Formula .

## What are the roots of quadratic equation 2?

A quadratic equation has only two roots. Now we can clearly see that the equation ax2 + bx + c 0 reduces to (x – u03b1)(x – u03b2) 0 and the equation ax2 + bx + c 0 is only satisfied by the values x u03b1 and x u03b2.

## What should be added to X² 2x 4 in order to find the solution by completing the square?

Steps

• Step 1 Divide all terms by a (the coefficient of x2).
• Step 2 Move the number term (c/a) to the right side of the equation.
• Step 3 Complete the square on the left side of the equation and balance this by adding the same value to the right side of the equation.

## How do you complete the square X method?

Complete the square formula In mathematics, completing the square is used to compute quadratic polynomials. Completing the Square Formula is given as: ax2 + bx + c u21d2 (x + p)2 + constant. The quadratic formula is derived using a method of completing the square. Let’s see.