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the sum of the cube of a number and the product of the number and twelve is equal to seven times the square of the number. find the number.
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4 votes
the sum of the cube of a number and the product of the number and twelve is equal to seven times the square of the number. find the number.

User Manjar
by
7.6k points

1 Answer

4 votes

Answer:

4 or 3

Explanation:

X³+12X=7X²

X³-7X²+12X=0

X(X²-7X+12)=0

SOLVING THE QUADRATIC EQUATION

you have X=3 or X=4

User Sona Das
by
7.5k points
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