Question

Expand (3x + 4y) (3x+5y)​

Answer 1

$(3x + 4y) (3x+5y) \\ 3x(3x+5y) +4y( 3x+5y) \\ 9x^2 + 15xy + 12xy + 20y^2 \\ \bf\pink{9x^2 + 27xy + 20y^2}$

Answer 2

Answer:

9x.x+27x.y+20y.y

Step-by-step explanation:

(3x+4y)(3x+5y)

=3x.3x +3x.5y+4y.3x +4y.5y

=9x.x+15x.y+12y.x+20y.y

=9x.x+15xy+12xy+20y.y

=9x.x+27xy+20y.y