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Solve 4r2 – 16 = 84. {±4} {±3} {±6} {±5}

Solve 4r2 – 16 = 84. {±4} {±3} {±6} {±5}
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1 vote
Solve 4r2 – 16 = 84.

{±4}


{±3}


{±6}


{±5}

User Webjockey
by
9.2k points

1 Answer

1 vote
4r²– 16 = 84
4r² = 84+16
4r²= 100
r²=25
r=√25
r=±5
User O P
by
8.0k points
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