3 years ago

Solve 2x^2 = 72. Question 1 options: {±18} {±36} {±6} {±8}

2 answers:

7 0

All you do is have to plug each option in for x
2*18^2=684
2*36^2=2592
2*6^2=72
2*8^2=128
So it's C.6

6 0

You divide both sides by 2 to get X^2=36. You then square root both sides to get X=6. The answer is d.6.

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