Question

3x+9ysquare-4ysquare
​

Answer 1

Answer:

first we take

3x^2-4y^2+5xy+20 - (1)

we want to get

-x^2-y^2+6xy+20 -(2)

then we want to minus

(2) from(1)

ie,

3x^2-4y^2+5xy+20

-

-1x^2-1y^2+6xy+20

=

4x^2-3y^2+1xy0

Step-by-step explanation:

Answer 2

Answer:

3x +5$y^{2}$

Step-by-step explanation: