What is 2x^2y^4z^5 x 4x^3y^5z^2? (1 point)
A. 8x^5y^9z^7
B. 6x^5y^9z^7
C. 8x^6y^9z^7
D. 8x^6y^20z^10
The answer is D.
When multiplying two terms with the same base, you add their exponents.
2x^2y^4z^5 x 4x^3y^5z^2 = 8x^(2+3)y^(4+5)z^(5+2) = 8x^5y^9z^7