Question

Multiply :- (2a + 3b) (4a + 3b - 5c)

Please Solve ​

Answer 1

Answer:

$(2a + 3b) (4a + 3b - 5c) \\ = 2a (4a + 3b - 5c)+ 3b(4a + 3b - 5c) \\ = 8 {a}^{2} + 6ab - 10ac + 12ab + {9b }^{2} - 15bc \\ = 8 {a}^{2} + 18ab - 10ac + {9b }^{2} - 15bc$