Question

find the product
(5x+10)(7x-9)

Answer 1

$the \: answer \: is \: \\ {35x}^{2} + 25x - 90$

Step-by-step explanation:

$(5x + 10)(7x - 9) \\ = (5x)(7x - 9) + (10)(7x - 9) \\ = {35x}^{2} - 45x + 70x - 90 \\ = {35x}^{2} + 25x - 90$

Answer 2

Answer:

=5x(7x-9)+10(7x-9)

35x^2-45x+70x-90

35x^2+25x-90

Step-by-step explanation:

if (a+b)(X+y) then,

a is multiplied to (X+y) seperately and b is multiplied to again (X+y) as we see above so it will be a(X+y) +b(X+y)

Here for easy example instead of (5x+10) i took (a+b) and (7x-9) i took (X+y)