do u know how to convert 90 yX 4 -300 yX

$$90yX^4 -300 yX$$

 

Convert makes no sense but I can factoris it for you.

$$30*y*XXXX - 30*10*y*X$$

Well you can take the facor 30 our of both terms.

And you can take X out of both terms, And you can take a y out of both terms

so you end up with

 

$$\\30Xy(XXX - 10)\\\\
=10Xy(X^3-10)$$

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