Item 31 Simplify (3x3y0x−2)4⋅(y2x−45xy−8)3. Write your answer using only positive exponents. Evaluate any numerical powers. The
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10 people who build at the same rate can frame a house in 6 days. That means it will take one person days to finish the house.
Which means that it will take 4 people days to finish the house.
So, the fractional part of the house 4 people can frame in 3 days will be
Thus, Option D is the correct answer.
A binomial squared is written like
So, we have
So, we want to complete the square
We can add and subtract 9 to write