Question
Factorize: $5x - 15x^2$

Answer

The greatest common factor of the terms $5x$ and $15x^2$ of the expression $5x - 15x^2$ is $5x$
Now,
$5x = 5x.(-1)$ and $-15x^2= 5x.(-3x)$
Hence, the expression $5x - 15x^2$ can be factorised as $5x(1 - 3x)$

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