Question

Multiply (5x-8y)(9x+4y)​

Answer 1

Answer:

5x(9x+4y)-8y(9x+4y)

=45 x^2 + 20xy-72xy-32 y^2

= 45 x^2-52xy-32y^2

Answer 2

Answer:

Given question is to multiply  $5x - 8y$  and   $9x + 4y$

$(5x - 8y)(9x + 4y) = 45x^2 + 20xy - 72xy - 32y^2$

                             $= 45x^2 - 52xy - 32y^2$

                   Hope it helps you^_^