Simplify the expression and write the answer without negative exponents.
-$\left( - 9 x ^ { 3 } y \right) \left( - 10 x ^ { 4 } y ^ { 6 } \right)$
A) $90 x ^ { 7 } y ^ { 7 }$
B) $- 19 x ^ { 7 } y ^ { 6 }$
C) $90 x ^ { 12 } y ^ { 6 }$
D) $- 90 x ^ { 7 } y ^ { 6 }$

Question

Quizplus · Accepted Answer

When multiplying powers with the same base, you add the exponents. Thus, $(-9) \times (-10) = 90$, $x^{3+4} = x^7$, and $y^{1+6} = y^7$, resulting in $90x^7y^7$.

Simplify the Expression and Write the Answer Without Negative Exponents (−9x3y)(−10x4y6)\left( - 9 x ^ { 3 } y \right) \left( - 10 x ^ { 4 } y ^ { 6 } \right)(−9x3y)(−10x4y6)

Simplify the Expression and Write the Answer Without Negative Exponents $\left( - 9 x ^ { 3 } y \right) \left( - 10 x ^ { 4 } y ^ { 6 } \right)$