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Question

Simplify the expression (9x^2+3x+7)+(3x^2+7x^5+2). Express your answer as a polynomial with terms arranged in decreasing order of degree.

Accepted Answer

Combining like terms, we find that align* (9x^2+3x+7)+&(3x^2+7x^5+2) &=(9x^2+3x^2)+(7+2)+7x^5+3x &=7x^5+12x^2+3x+9. align*