How do you evaluate 5k ^ { - 2} \cdot - 3k ^ { 3}5k23k3?

2 Answers
Mar 14, 2018

=-15k=15k

Explanation:

Since they are like terms, simple multiplication is required:
=5k^-2*-3k^3=5k23k3
Integers get added when multiplied
=-15k=15k

Mar 14, 2018

-15k15k

Explanation:

"using the "color(blue)"law of exponents"using the law of exponents

•color(white)(x)a^mxxa^n=a^((m+n))xam×an=a(m+n)

rArr5k^-2xx-3k^35k2×3k3

=(5xx-3)xxk^((-2+3))=(5×3)×k(2+3)

=-15k=15k