Question

Necesito ayuda en esto porfavor

Answer 1

1.

7xy(x²-3xy+2x-y²)=

7x³y-21x²y²+14x²y-7xy³

2.

(1/2)x²(3x³-2/3x²+1/2x-8)=

3/2x^5-2/6x^4+1/4x³-4x²

3.

(2x-5)(7x+4)=

14x²+6x-35x+20=

14x²-31x+20

4.

(2x+3y)(x²+2x-4)

2x³+4x²-8x+3x²y+6xy-12y

5.

(2x+3y)(x-5xy+2y)

2x²-10x²y+4xy+3xy-15xy²+6y²

2x²-10x²y+7xy-15xy²+6y²