Question

☝️☝️☝️☝️please answer​

Answer 1

Answer:

Step-by-step explanation:

$(7x^{3} +5x^{2}+3x+8)+ (9x^{3}-2x^{2} +9-7x)\\=7x^{3}+9x^{3}+5x^{2}-2x^{2}+3x-7x+8+9\\= 16x^{3}+3x^{2}-4x+17$

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Answer 2

Answer:

(7x³+5x²+3x+8)+(9x³−2x²+9−7x)

=7x³+9x³+5x²−2x²+3x−7x+8+9

=16x³+3x²−4x+17