Solve x2 + 10x = 24 by completing the square. which is the solution set of the equation? (negative 5 minus startroot 34 endroot comma negative 5 + startroot 34 endroot) (negative 5 minus startroot 29 endroot comma negative 5 + startroot 29 endroot) {–12, 2} {–2, 12}

edg 2020

x = - 12, x = 2

Step-by-step explanation:

Given

x² + 10x = 24

To complete the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(5)x + 25 = 24 + 25

(x + 5)² = 49 ( take the square root of both sides )

x + 5 = ± = ± 7 ( subtract 5 from both sides )

x = - 5 ± 7, thus

x = - 5 - 7 = - 12 or x = - 5 + 7 = 2

C

Step-by-step explanation:

-12 > a

step-by-step explanation:

-11 > 1 + a

subtract 1 from each side

-11 -1> 1 -1+ a

-12 > a