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Question

Solve for x in x3+1=715

A
58
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B
85
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C
85
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D
58
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Solution

The correct option is B 85
We have, x3+1=715

x3+11=7151 [Subtracting 1 from both sides]

x3=71515

x3=815

x3×3=815×3 [Multiplying both sides by 3]

x=85


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