Rewrite the function by completing the square. f(x)= x^2 +8x+4

Please check the explanation.

Step-by-step explanation:

Given the function

Let's rewrite the function by completing the square.

Subtract 4 from both sides

Simplify

Rewrite in the form (x+a)²=b

Rewrite in the form x²+2ax+a²

solve for a, 2ax = 8x

Divide both sides by 2x

simplify

Add a²=4² to both sides

Apply perfect square formula

(a+b)²= a²+2ab+b²

              ∵

Thus,

282 6/7 cm^2

step-by-step explanation:

step-by-step explanation:

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