Question

simplfy-:
simplfy-:
solve all the sums and don't write unusual
if you don't know so don't write or I will report to my moderators
and a request solve this questions to NandanaMK and Mannat goyat 99

solve the sum by sing this image ​

Answer 1

1.

$(3x + 2y)(x {}^{2} - 4xy - 2y {}^{2} ) \\ = 3x( { x}^{2} - 4xy - 2y {}^{2} ) + 2y(x {}^{2} - 4xy - 2y {}^{2} ) \\ = 3x {}^{3} - 12x {}^{2} y - 6xy {}^{2} + 2x {}^{2} y - 8xy {}^{2} - 4y {}^{3} \\ = 3x {}^{3} - 10x {}^{2} y - 14xy {}^{2} - 4y {}^{3}$

2.

$2x {}^{2} + (2x - 3y)(5x + y + 1) \\ = 2x {}^{2} + 10x {}^{2} + 2xy + 2x - 15xy - 3y {}^{2} - 3y \\ = 12x {}^{2} - 13xy + 2x - 3y {}^{2} - 3y$

Answer 2

i hope it will help you...

last one i dont know sorry. dear.