Answer:
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Answer: (C) divide by 1
<u>Step-by-step explanation:</u>
when dividing by x - 1, set the expression equal to zero to find the zero. That is actually what you are dividing by:
x - 1 = 0 ⇒ x = 1
so the number outside of the synthetic division symbol is 1.
The answer is B: 6 cm. You can use guess-and-check method, and plug the possible different answers into the equation x(x+6)=72, x stands for the width.
