Question

find the zeros of the polynomial function y=x^2-64

Answer 1

Set y equal to 0

0=x^2-64

can you isolate x?

Answer 2

no

Answer 3

How would you move the -64 to the other side of the equation?

Answer 4

change the negative to a positive?

Answer 5

Yeah, add it to both sides, so you end up with

x^2=64

right?

Answer 6

Now how do you undo the squaring?

Answer 7

add 64 to both sides? not sure

Answer 8

We already added 64 to both sides...

Answer 9

sorry so slow internet connection stinks

Answer 10

not sure then

Answer 11

Opposite of squaring is taking the square root, so you would take the square root of both sides

Answer 12

so the square root of 64 is 16 and 4 or 8 and 8

Answer 13

Square root of 64 is -8 and 8

so your final answer is

x=-8 and x=8

Answer 14

sweet ty much

Answer 15

You're welcome