Question

Plzzzzz help me.. Help me​

Answer 1

Answer:

2x^2-4x+7

5x^2-3x-11

- + +

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-3x^2-x+17

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Answer 2

Answer:

$5 {x}^{2} - 4x + 7 - (2 {x}^{2} - 3x - 11) \\ = 5 {x}^{2} - 4x + 7 - 2 {x}^{2} + 3x + 11 \\ = 3 {x}^{2} - x + 18$

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