Which value is needed to create a perfect square trinomial
from the expression x2 + 8x + ?

16

Step-by-step explanation:

To complete the square

add ( half the coefficient of the x- term )²

x² + 2(4)x + 4²

= x² + 8x + 16 = (x + 4)² ← perfect square

the answer to this would be 16

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step-by-step explanation:

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5x + 5

step-by-step explanation:

you should always add the diagrams and graphs we cannot see. this particular question is kind of borderline because we can make a graph for you.

(f + g)x = -x^2 +3x + 5 + x^2 + 2x

(f + g)x = 5x + 5

the graph of z = 5x + 5 is shown below. always use desmos when in doubt.