Question

factor 81-y^2

Answer 1

Set the equation equal to zero\[81 - y^2 = 0 \rightarrow y^2 = 81 \rightarrow y = \sqrt{81} = 9\]

Answer 2

so square root it?

Answer 3

is y=9 the final answer?

Answer 4

Yeah :)

Answer 5

Thank you! now would if i have one like this y^2-4y-32