Question

multiply by (2a+3b)by(4a-5b)

Answer 1

Hey friend,
Here is the answer you were looking for:
(2a + 3b)(4a - 5b)

= 2a × 4a - 2a × 5b + 3b × 4a - 3b × 5b

= 8a^2 - 10ab + 12ab - 15b^2

= 8a^2 + 2ab - 15b^2

Hope this helps!!!

@Mahak24

Thanks...
☺☺

Answer 2

$(2a + 3b)(4a - 5b) \\ 2a(4a - 5b) \: + 3b(4a - 5b) \\ {8a}^{2} - 10ab + {12ab} - 15b^2 \\ {8a }^{2} + 2ab - 15b^2 \: \: is \: the \: answer$