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Divide and Simplify a2+3a−28a2−14a+49÷a2−8a+16a2+6a−7\frac{a^{2}+3 a-28}{a^{2}-14 a+49} \div \frac{a^{2}-8 a+16}{a^{2}+6 a-7} A) −a−1a−4-\frac{a-1}{a-4}

Question 56

Multiple Choice

Divide and simplify.
- a2+3a−28a2−14a+49÷a2−8a+16a2+6a−7\frac{a^{2}+3 a-28}{a^{2}-14 a+49} \div \frac{a^{2}-8 a+16}{a^{2}+6 a-7}


A) −a−1a−4-\frac{a-1}{a-4}
B) (a+7) 2(a−1) (a−7) 2(a−4) \frac{(a+7) ^{2}(a-1) }{(a-7) ^{2}(a-4) }
C) (a+7) 2(a−1) (a−7) 2\frac{(a+7) ^{2}(a-1) }{(a-7) ^{2}}
D) (a−4) 3(a−7) 2(a−1) \frac{(a-4) ^{3}}{(a-7) ^{2}(a-1) }

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