Question

SELECT THE BEST ANSWER

Expand the following product: (3a - 2b)(a + 5b)
a) 3a? + 13 ab - 1062
b) 3a2 + 13ab + 1062
c) 3a2 + 17ab - 1062
d) 3a2 - 13ab - 10b2​

Answer 1

3a² + 13ab - 10b²

Explanation:

(3a - 2b)(a + 5b)

Each term in each bracket multiplies each term in the other bracket.

3a(a + 5b) -2b(a + 5b)

3a² + 15ab - 2ab - 10b²

3a² + 13ab - 10b²