Question 233992
(2x^5)^3(-3x^4)^3

(2^3)(x^5*3) (-3^3) (x^4*3)
(8x^14)(-27x^12)
= -216x^26

Each coeffienct will need to have their exponent multiplied by the outer exponent, in this case it is 1*3 for each. Then the variables will need their exponents multiplied by the outer exponents as well. Then multiply the two coeffients and add the exponents.