Question

Solve the equation. If necessary, round your answer to the nearest tenth.

x2 = 196

A.

14

B.
–14, 14

C.

98

D.
–98, 98

Answer 1

14, -14

Explanation:

x^2 = 196

x =
`√(196)`

x =
`√(4 * 49)`

x =
`√(4)` *
`√(49)`

x = 2 * 7

x = 14

Hope this helps >.<

Answer 2

x^2 =196
x^2 -196=0
(x-14)*(x+14)=0
so (x-14)=0 && (x+14)=0
x=14 , -14
the answer is B