Joseph is solving the equation x° +8x-4 = 0 using the technique of completing the square. x² + 8x -4=0
x? +8x+? = 4+?
What number should Joseph add to both sides of the equation to complete the square, and why?
O A. He should add 4 to both sides because
8
2
= 4
<
B.
He should add 4 to both sides because
= 4
C.
He should add 16 to both sides because
16
2.
= 8
0
D.
He should add 16 to both sides because
= 16
4 of 5 Answered

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note: the best i know.

(w – 2.5)(w + 2.5)

(–4v – 9)(–4v + 9)

step-by-step explanation:

option 3 . (5x + 1) - (-10x + 6)

step-by-step explanation:

option 1 :

(4x + 3) + (-9x + 4)

or 4x+3 -9x + 4

or -5x + 7

option 2

(x - 2) - (6x - 9)

or x-2-6x + 9

or -5x + 7

option 3

(5x+ + 6)

or 5x + 1 + 10x -6

or 15x -5

option 4

-4x+2x+7-3x

-7x + 2x + 7

-5x + 7

hence only option 3 did   not satisfy the given simplify expression.