Question

Add X2 - 2xy +3y2 and 5y2 +3xy -6x2 in a row method​

Answer 1

Answer:

(x+y+z+w)2 = x2 +y2 + z2 +w2 +2xy+2xz+2xw+2yz+2yw+2zw ... (x+y) 3 = (x+y)(x2 +y2 +2xy) = x3 +y3 +3xy(x+y).

Answer 2

Step-by-step explanation:

$x {}^{2} - 2xy + 3y {}^{2} + 5y {}^{2} + 3xy - 6x { }^{2} \\ x { }^{2} - 6x {}^{2} - 2xy + 3xy + 3y {}^{2} + 5y {}^{2} \\ - 5x {}^{2} + xy + 8y {}^{2} \: \: \: answer$