Question

pls quick
question 3 or iii​

Answer 1

Answer:

${x}^{4} - 6 {x}^{3} + 2x - 7 + {x}^{3} - x + 5 {x}^{2} + 2 - {x}^{4} \\ = - 6 {x}^{3} + {x}^{3} + 2x - x - 7 + 2 + 5 {x}^{2} \\ = - 5 {x}^{3} + x - 5 + 5 {x}^{2}$

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