1. (A\Xb2 + Ab - Ab + B\Xb2)(A - B) =, 2. (X + Y)\Xb3 =, 3. (X + 4)(X + 4)(X + 4) =

1. (a² + ab - ab + b²)(a - b) =

2. (x + y)³ =

3. (x + 4)(x + 4)(x + 4) =

 

Answer and Step-by-step explanation:

• (a²+ab−ab+b²)(a−b)

=(a²)(a)+(a²)(−b)+(ab)(a)+(ab)(−b)+(−ab)(a)+(−ab)(−b)+(b²)(a)+(b²)(−b)

=a³−a²b+a²b−ab²−a²b+ab²+ab²−b³

=a³−a²b+ab²−b³

• (x+y)³

=(x+y)*(x+y)*(x+y)

=(x+y)(x²+2xy+y²)

=(x)(x²)+(x)(2xy)+(x)(y²)+(y)(x²)+(y)(2xy)+(y)(y²)

=x³+2x²y+xy²+x²y+2xy²+y³

=x³+3x²y+3xy²+y³

• (x+4)(x+4)(x+4)

=((x+4)(x+4))(x)+((x+4)(x+4))(4)

=x³+8x²+16x+4x²+32x+64

=x³+12x²+48x+64

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