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

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