#1. bring the fraction: b / 7a^2c to a denominator of 35a^3c^3

#2. bring the fraction: a / a−4 to a denominator of 16−a^2

Part A: Term is used to bring denominator of

Part B: Term is used to bring denominator of

Explanation:

Part A: To bring the fraction to a denominator of , we need to multiply the denominator by the term

The term is determined by which equals

Thus, the fraction becomes

Thus, the term is used to bring denominator of

Part B: To bring the fraction to a denominator of , we need to multiply the denominator by

Thus, we have,

Thus, the term is used to bring denominator of

other answer is correct. i had used the radius of the radius somehow. a website: