lebatard776 lebatard776

16-04-2019
Mathematics

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If M=5x^2+7x-4 and N=-3x^2-4x+5, then M-N equals

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jimrgrant1 jimrgrant1

16-04-2019

Answer:

8x² + 11x - 9

Step-by-step explanation:

M - N

= 5x² + 7x - 4 - 1(- 3x² - 4x + 5) ← distribute parenthesis by - 1

= 5x² + 7x - 4 + 3x² + 4x - 5 ← collect like terms

= 8x² + 11x - 9

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