Multiply. -$\left( 2.9 x ^ { 5 } \right) \left( 3 x ^ { 8 } \right)$ A) $0.87 x ^ { 13 }$ B) $8.7 x ^ { 13 }$ C) 87 x ⁴⁰ D) $8.7 x ^ { 40 }$

Question

Quizplus · Accepted Answer

When multiplying two exponential expressions with the same base, you add the exponents and multiply the coefficients. Here, $2.9 \times 3 = 8.7$ and $x^5 \times x^8 = x^{5+8} = x^{13}$, resulting in $8.7 x^{13}$.

Multiply - (2.9x5)(3x8)\left( 2.9 x ^ { 5 } \right) \left( 3 x ^ { 8 } \right)(2.9x5)(3x8)

Multiply
- $\left( 2.9 x ^ { 5 } \right) \left( 3 x ^ { 8 } \right)$