Four times the square of a certain number increased by 6 times the number equals 108.find the number

2 answers:

7 0

Hello there.

Four times the square of a certain number increased by 6 times the number equals 108.find the number

x = 4.5
x = -6

slamgirl [31]3 years ago

5 0

To effectively determine the correct answer, it would be helpful to write this into an algebraic expression. We let x as the number. We do as follows:

Four times the square of a certain number increased by 6 times the number equals 108.

4x^2 + 6x = 108

The numbers can be either of the following since the equation generated was a quadratic equation which has two roots.
x = 4.5
x = -6

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