# How do you solve x 2 2x 8 0 by completing the square?

## How do you solve x 2 2x 8 0 by completing the square?

Therefor, the 2 real roots are: 2 and -4.

## What are the roots of the quadratic equation x 2 2x 8 0?

The solutions to x2 + 2x – 8 0 are x -4 and x 2.

## Which of the following are solutions to the quadratic equation x 2 2x 8 0?

Detailed Solution.Sign of the product of the rootsSign of the sum of the rootsSign of the roots+ ve- veBoth the roots are negative3 more rows

## How do you solve for x using completing the square?

form ax2 + bx + c to the vertex form a(x – h)2 + k. The most common application of completing the square is in solving a quadratic equation.Completing the Square.1.Completing the Square Method6.FAQs on Completing the Square4 more rows

## What is the formula for completing the square?

Detailed Solution.Sign of the product of the rootsSign of the sum of the rootsSign of the roots+ ve- veBoth the roots are negative3 more rows

## What are the roots of the quadratic equation x2 2x 8 0?

Therefor, the 2 real roots are: 2 and -4.

## How do you find the roots of a quadratic equation?

The solutions to x2 + 2x – 8 0 are x -4 and x 2.

## What are the roots of a quadratic equation x² 6x 8 0?

For a quadratic equation ax2 + bx + c 0,

• 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.
• Sum of the roots -b/a.
• Product of the roots c/a.

## Is x =- 2 is a solution of x2 2x 8 0?

Therefor, the 2 real roots are: 2 and -4.

## What is the product of the roots of the equation x2 − 2x − 8?

No , x-2 is not a solution to the given quadratic equation .

## How do you solve x 2 2x 8 by completing the square?

Detailed Solution.Sign of the product of the rootsSign of the sum of the rootsSign of the roots+ ve- veBoth the roots are negative3 more rows