Question

Add the following polynomials, then place the answer in the proper location on the grid. Write answer in descending powers of x.(-4x^2+3xY-Y^2)(-7x^2-xy+6Y^2)(x^2+4xY-2y^2) help me

Answer 1

help me and solve

Answer 2

@Kashan

Answer 3

kashan do not solve it for her

Answer 4

just hint her how to do it :)

Answer 5

(-4x^2+3xY-Y^2)(-7x^2-xy+6Y^2)(x^2+4xY-2y^2)
= -4x^2+3xY-Y^2-7x^2-xy+6Y^2+x^2+4xY-2y^2
= -4x^2-7x^2+x^2+3xY-xy+4xY-Y^2+6Y^2-2y^2
First of all I removed the brackets then combined the similar terms... now you just have to add the terms having same powers of "x"..
Can you do it now..??

Answer 6

10x^2+7xy+%y^2-2y^2

Answer 7

-10x^2+7xY+5y^2-2Y^2

Answer 8

10x^2+7xY5y^2-2y^2