If M=5x^2+7x-4 and N=-3x^2-4x+5, then M-N equals
1 answer:
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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Answer: x = 5/7
Step-by-step explanation:
The numerator is the power, while the denominator is the index (thing next to radical).
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