3 years ago

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

Mathematics

1 answer:

Phantasy [73]3 years ago

4 0

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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