Question

solve the equations by using the square root property or completing the square:
1.) y^2=8
2.)(9s+8)^2=9

show steps / solution

Answer 1

Use the square root property.

Answer 2

You forgot the +/-.

\[y^2 = 8 \implies y = \pm \sqrt{8} = \pm \sqrt{2^2 \cdot 2} = \pm 2\sqrt{2}\]

Answer 3

1.) y^2=8
\[y=\sqrt{8}=2\sqrt{2}\]

Answer 4

i have the answers i need the solutions

Answer 5

use caculater if you want exactly answer

Answer 6

approximate answer?

Answer 7

ey nancy i think its + or - because you can square it

Answer 8

Yeah, the above is the exact answer, the calculator will give you the approximate one.

Answer 9

2.)(9s+8)^2=9\[9s+8=+-\sqrt{9}\]

Answer 10

\[s=(-8\pm \sqrt{8})/9\]

Answer 11

they got the answers

Answer 12

\[s=\frac{-8+\sqrt{8}}{9}\]or\[s=\frac{-8-\sqrt{8}}{9}\]caculator