Complete the square for the expression x^2+8x. Then factor the trinomial.
x^2 + 8x + _ = _

see below

Step-by-step explanation:

x^2 + 8x + _ = _

To complete the square, take the coefficient of the x term

8

Divide by 2

8/2 =4

Square it

4^2 =16

Add this to both sides

x^2 + 8x + 16_ = 16_

Now the left side factors into  (x+ 8/2)^2

(x+4)^2 = 16

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step-by-step explanation:

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed