Question

solve by cross multiplication method​

Answer 1

Step-by-step explanation:

1 answer 4

(2x+3y)

2

=(2x)

2

+2(2x)(3y)+(3y)

2

=4x

2

+12xy+9y

2

Aliter: (2x+3y)

2

=(2x+3y)(2x+3y)

=2x(2x+3y)+3y(2x+3y)

=(2x)(2x)+(2x)(3y)+(3y)(2x)+(3y)(3y)

=4x

2

+6xy+6yx+9y

2

[∵xy=yx]

(2x+3y)

2

=4x

2

+12xy+9y

2