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7-60.

Dominic simplified an expression using the Distributive Property and got this result: $15x^{2} − 5x$. Can you find a possible expression that he started with?

What are the factors of $15x^2$ and $5x$?

There are a few possible answers.

One answer is: $x\left(15x − 5\right)$

Can you think of another answer?