Multiply the monomials.
-$$\left( 4 x ^ { 5 } \right) \left( - 9 x ^ { 4 } \right)$$
A) $36 x ^ { 9 }$
B) $- 36 x ^ { 9 }$
C) $36 x ^ { 20}$
D) $- 36 x ^ { 20 }$

Name: Multiply the monomials. -\[\left( 4 x ^ { 5 } \right) \left( - 9 x ^ { 4 } \right)\] A) $36 x ^ { 9 }$ B) $- 36 x ^ { 9 }$ C) $36 x ^ { 20}$ D) $- 36 x ^ { 20 }$
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Question

Quizplus · Accepted Answer

When multiplying monomials, you multiply the coefficients (4 and -9) and add the exponents of like bases (5 and 4 for $x$). This gives $-36x^{9}$.

Multiply the Monomials (4x5)(−9x4)\left( 4 x ^ { 5 } \right) \left( - 9 x ^ { 4 } \right)(4x5)(−9x4)

Multiply the Monomials $\left( 4 x ^ { 5 } \right) \left( - 9 x ^ { 4 } \right)$