SOLUTION: I need help in this problem. {{{-2x^2=72}}} The answers are as given a. x= +or-36 b. x=+or-6 c. x=+or-36i d. x=+or-6i

SOLUTION: I need help in this problem. {{{-2x^2=72}}} The answers are as given a. x= +or-36 b. x=+or-6 c. x=+or-36i d. x=+or-6i

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Question 548232: I need help in this problem.

The answers are as given
a. x= +or-36
b. x=+or-6
c. x=+or-36i
d. x=+or-6i
Answer by mathie123(224) (Show Source): You can put this solution on YOUR website!

Divide both sides by -2 to get:

Take the square root of both sides to get:

or

Now we know that by definition

or

or

or

or

(Which is answer d)
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