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The sum of a number and twice its square...

The sum of a number and twice its square is 78. The correct form is its equation is:

A

` x+2x^(2) = 78`

B

` x+( 2x)^(2) = 78`

C

` x^(2) + 2x= 78`

D

` x^(2) +( 2x)^(2) = 78`

Text Solution

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The correct Answer is:
a
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