Which equations are correct?

select each correct answer.

6b^3 (-2b^3) = -12b^6

8x^3 (3x^2) = 24x^6

3a^3 (-3a^4) = - 9a^7

4x^3 (6x^2) = 24x^6

6b^3 (-2b^3) = -12b^6

3a^3 (-3a^4) = - 9a^7

Step-by-step explanation:

Equation 1: 6b^3 (-2b^3)

multiplying: 6 * (-2) b^3*b^3 = - 12 b^ (3+3) = - 12b^6

Equation 2: 8x^3 (3x^2)

multiplying: 8*3 x^3*x^2 = 24 x^ (3+2) = 24x^5

Equation 3: 3a^3 (-3a^4)

multiplying: 3 * (-3) a^3*a^4 = - 9 a^ (3+4) = - 9a^7

Equation 4: 4x^3 (6x^2)

multiplying: 4*6 x^3*x^2 = 24 x^ (3+2) = 24x^5

1 and 3

Step-by-step explanation:

Because when you multiply the powers

then the powers will be added together.