Which expression is equivalent to (5x^3)(2x^7)?

Question

A. 10x^10
B. 7x^7
C. 3x^4
D. 10x^21

Answer 1

The expression (5x^3)(2x^7) can be simplified by multiplying the coefficients and adding the exponents of x.

(5x^3)(2x^7) = 10x^(3 + 7) = 10x^10

Therefore, the answer is A. 10x^10.