SOLUTION: PLease help solve a^2 – 40 = 0 and w^2 + 49 = 0

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Question 200822: PLease help solve
a^2 – 40 = 0
and w^2 + 49 = 0
Answer by RAY100(1637) About Me  (Show Source):
You can put this solution on YOUR website!
a^2 -40 =0
.
a^2 =40
.
sqrt both sides
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a= =/- sqrt 40 = +/- 6.325
.
.
w^2 +49 =0
.
w^2 =-49
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w = +/- sqrt -49 = +/- 7 i
.