COMPUTERS AND TECHNOLOGY MIDDLE SCHOOL

What are the solutions for x when y is equal to 0 in the following quadraticfunction?
у = х^2 + 16х + 64
ОА) х = 0
ОВ) х = 8
OC) x = -8
OD) х = 0 or x = 8
OE) х = 0 or x = -8
I did not mean to mark this under computer, I don't know how to fix it. ugh.

Answers

Answer 1

Answer:

Answer:

OC) x = -8

Explanation:

Given Equation is:

$y = x^(2) +16x+64$

Putting y=0 will give us:

$x^(2) +16x+64 = 0$

The equation is a complete square

The formula is

$a^(2)+2ab+b^(2)=(a+b)^(2)$

So,

putting in the form of formula

$(x)^(2)+ 2.x.8+(8)^(2)=0$

$(x+8)^(2) = 0$

The square will be cancelled with square root

$\sqrt{(x+8)^(2) } = 0$

$x+8 = 0$

$x = -8$

There is only one root.

So, the solution for x wheny is equal to zero is x = -8 ..

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