shgmartWillgir1ld shgmartWillgir1ld

26-05-2016
Mathematics

Answered

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

3x2 = 147

Question 2 options:

A4.1, –4.1

B7, –7

C24.5, –24.5

D49, –49

Verified Answer :

28-05-2016

3x^2 = 147
divide both sides by 3
x^2 = 49
x^2 -49 = 0
(x-7)(x+7) =0
so,, x = 7 , -7
the answer is B

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