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hammer [34]
3 years ago
9

When 63x3y + 105x2y is divided by -7xy, the quotient is . If this quotient is divided by , the result is 3x + 5.

Mathematics
2 answers:
Karo-lina-s [1.5K]3 years ago
8 0

Answer:

   -9x^2 - 15x.

   -3x.

Step-by-step explanation:

The first quotient is -9x^2 - 15x.

To find the second result we divide the above  by 3x + 5:

          -3x

          ____________

3x + 5) -9x^2 - 15x

           -9x^2 - 15x

           -----------------

            ..................

The result is -3x.

lesantik [10]3 years ago
6 0

Answer:

The answers are -9x²-15x and -3x

Step-by-step explanation:

First we need to find  \frac{63x^3y + 105x^2y}{-7xy}.

  \frac{63x^3y + 105x^2y}{-7xy}=\frac{63x^3y}{-7xy}+\frac{105x^2y}{-7xy}=-9x^2-15x

Now we need to find value of z for which \frac{-9x^2-15x}{z}=3x+5

                 \frac{-9x^2-15x}{z}=3x+5\\\\z=\frac{-9x^2-15x}{3x+5}=\frac{-3x(3x+5)}{3x+5}=-3x      

So the answers are -9x²-15x and -3x

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