Question 425228
7x3(3 is exponent)(3x3y)2(exponent is 2) − x(x4y)2(exponent is 2)

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First, let me make sure I am copying the problem right as I think it is:

(7x^3)(3x3y)^2-x(x4y)^2
=(7x^3)(81x^2y^2)-x(16x^2y^2)
=567x^5y^2-16x^3y^2
=(x^3y^2)(567x^2-16) (ans: if I copied it right)