Question

I will give brainliest please help me asap! Simplify the expression. Make sure you have all positive exponents.​

Answer 1

Answer:

${x}^{21}$

Step-by-step explanation:

x^7×3

x^21

Answer 2

Answer:

x^21.

Step-by-step explanation:

=(x^7)^3 (first multiply the powers like 3*7 it gives result 21)

=x^21   ( so the power of x becomes 21)