SOLUTION: 15 more than the square of a number is 8 times the number

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Although you don't specifically say, I assume that you want to determine the number.

The number:

The square of the number:

15 more than the square of the number:

8 times the number:

15 more than the square of the number is (=) 8 times the number:

Put the quadratic into standard form and solve by factoring:



Hint: -3 + (-5) = -8 and -3 X -5 = 15