Question

(x²+y²) (x²+y²) +(x²-y²) (x²+y²)

Answer 1

Answer: 2(x^4 + x^2 y^2)

Step-by-step explanation: take out (x^2 + y^2) common u are left with (x^2 + y^2 + x^2 - y^2) = 2 x^2

Multiply the equations we get above answer.

Answer 2

Step-by-step explanation:

2 2 2 2 2 2 2 2

(X+ Y) (X+Y) = -(X- Y) (X+ Y)

2 2 2 2 2 2 2 2 2 2 2

X (X+ Y) Y (X+ Y)= -X(X+ Y) Y(X+

2

Y)

2 2 2 2. 2. 2 2 2

2X+XY+YX+2Y = -2X-XY +YX+2Y

2 2. 2. 2

YX +2Y=YX+2Y