Question

Add X3 -2x² -9 ; 5x³ + 2x + 9
​

Answer 1

Answer:

............... .

Step-by-step explanation:

2×34=68

Answer 2

Answer:

${x}^{3} - 2 {x}^{2} - 9 + (5 {x}^{3} + 2x + 9) \\ \\ = {x}^{3} - 2 {x}^{2} - 9 + 5 {x}^{3} + 2x + 9 \\ \\ = 6 {x}^{3} - 2 {x}^{2} + 2x - 9 + 9 \\ \\ = 6 {x}^{3} - 2 {x}^{2} + 2x$

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