Question

(2a +7b) (3 a² - 7b² +4c2)​

Answer 1

Answer:

Use term by term multiplication.

Step-by-step explanation:

(2a+7b)(3a^2-7b^2+4c^2)

= 6a^3 - 14ab^2 + 8ac^2 + 21ab^2 - 49b^3 + 28bc^2

= 6a^3 - 49b^3 + 4ab^2- + 3bc^2