Simplify. Express your answer using positive exponents.

Question

4r^2 x 7r

Answer 1

To simplify the expression \( 4r^2 \times 7r \), you can follow these steps:

1. Multiply the coefficients: \( 4 \times 7 = 28 \).
2. Combine the powers of \( r \): \( r^2 \times r = r^{2+1} = r^3 \).

Putting it all together, we have:

\[ 4r^2 \times 7r = 28r^3 \]

Thus, the simplified expression is:

\[ \boxed{28r^3} \]