Question

Simplify the expression 21b^4 − 3b by combining like terms.

A) 21b^4 − 3b
B) 18b^4
C) 18b^3
D) 18b^5

Answer 1

To simplify the expression 21b^4 - 3b by combining like terms, we add or subtract the coefficients of the terms with the same exponent.

Step-by-step explanation:

To simplify the expression 21b^4 - 3b by combining like terms, we add or subtract the coefficients of the terms with the same exponent. In this case, the terms 21b^4 and -3b have the same variable (b) and the same exponent (4), so we can combine them.

The simplified expression is 21b^4 - 3b.