15 times the square of a nonzero number is equal to 20 times the number

Let the number be x

The expression above is written as

15x² = 20x

Divide both sides by x

We get

15x²/x = 20x/x

15x = 20

Divide both sides by 15

x = 20/15

x = 4/3

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the answer is (-4,-4)

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