2 answers:
you answer is b) -x^2-4x+7
Answer:
B
Step-by-step explanation:
4x² - 7x + 9 - (5x² - 3x + 2) ← distribute by - 1
= 4x² - 7x + 9 - 5x² + 3x - 2 ← collect like terms
= (4x² - 5x² ) + (- 7x + 3x ) + (9 - 2)
= - x² - 4x + 7 → B
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