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A Student Says That the Equation (a+8)(a−1)=12(a+8)(a-1)=12 Can Be Solved as Follows

Question 45

Essay

A student says that the equation
(a+8)(a−1)=12(a+8)(a-1)=12 can be solved as follows: a+8=2a+8=2 or a−1=6a-1=6 .
If this is correct, explain why. If it is not correct, explain why and give the correct method.

Correct Answer:

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This is not correct. The zero-factor pro...

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