Question 1037093
(2x^2-7x+6) - (4x^2+6x-9) = -2x^2 - 13x + 15
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note that - -9 is +9
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(5x^3y^7)^3 = 5^3x^9y^21 = 125x^9y^21
:
note that we multiply exponents in this problem
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