Question

$(5{x}^{2} + 7x - 8) + (3 {x}^{2} - 9x - 7)$
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Answer 1

Step-by-step explanation:

(5x^2+7x-8)+(3x^2-9x-7)

5x^2+7x-8+3x^2-9x-7

(5x^2+3x^2)+(7x-9x)+(-8-7)

8x^2-2x+15