Question 49140
9j+4k-2j-7k [Combine like-terms]
7j-3k
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p*p*p+3q*3q-q+3p*3q*3q [Combine like-terms]
{{{(p^3 + 9q^2 -q + 27q^3)}}}
{{{(28p^3 + 9q^2 - q )}}}
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3y*3y+5x-12x+9y*9y-5 [Combine like-terms]
{{{(9y^2-7x+81y^2-5)}}}
{{{(90y^2-7x-5)}}}
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3(x*x-y)+9(x*x+2y [Combine like-terms]
{{{(3(x^2-y)+9(x^2+2y))}}} [Distribute]
{{{(3x^2-3y)+(9x^2+18y))}}}
{{{(3x^2-3y+9x^2+18y))}}}[Remove the inner paranthesis]
{{{(12x^2+15y))}}}[Combine like-terms][Final answer]