SOLUTION: add (4+6x+9x^2+7x^3)+(7-6x+9x^2-7x^3

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Question 882037: add
(4+6x+9x^2+7x^3)+(7-6x+9x^2-7x^3
Answer by algebrahouse.com(1659) About Me  (Show Source):
You can put this solution on YOUR website!
(4 + 6x + 9x² + 7x³) + (7 - 6x + 9x² - 7x³)
= 4 + 6x + 9x² + 7x³ + 7 - 6x + 9x² - 7x³ {removed parentheses}
= 18x² + 11 {combined like terms}

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