Solve the equation. x^2 = 160 A \frac{+}{} 16 \frac{+}{} 4 √(10) C 14 D -14, 14

Question

Solve the equation. x^2 = 160

A
`\frac{+}{}` 16
`image`

B
`\frac{+}{} 4 √(10)`


C 14


D -14, 14

Answer 1

`x^2 = 160 \\ \\ x = \pm √(160) \\ \\ x = \pm 4 √(10) \\ \\`

The final result is: x = ±4 √10 or B.

Answer 2

square root both sides and don't forget to get the positive and negative roots
x=+/-
`√(160)`


`√(160)`=
`√(16)` times
`√(10)`


`√(16)`=+/-4

answer is
+/-4
`√(10)`

answer is b