4. What is the quotient of 21x4 - 14x - 28x? and 7x7
A. 3x2 - 2x - 4
B. 3x2 - 2x - 3
C. 3x2 + 2x - 4
D. 3x2 + 2x + 4
A. 3x2 - 2x - 4
B. 3x2 - 2x - 3
C. 3x2 + 2x - 4
D. 3x2 + 2x + 4
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Answer:
A. 3x² - 2x - 4
Step-by-step explanation:
(21x⁴ - 14x³ - 28x²) ÷ (7x²)
= [3x²(7x²) - 2x(7x²) - 4(7x²)] ÷ (7x²)
= [7x²(3x² - 2x - 4)] ÷ (7x²)
= 3x² - 2x - 4
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