Question

por favor ayuda con estos ejercicios​

Answer 1

Respuesta:

a) x(y+z+1)-z(x-y-1)

xy+xz+x-xz-yz-z

R= xy+x-yz-z

b) (m+n)(m²+1)+(m²-n)(n+5)

m^5+m+m²n+n+m²n+5m²-n²-5n

R= m³+5m²+2m²n+m-n²-4n

c) (4x²+1)+3x(x³-2x+1)

4x²+1+3x⁴-6x³+3x

R= 3x⁴-6x³+4x²+3x+1

d) 2n(1/3m+2n)-(3/4m²+5/3n)(2/5m)

2/3mn+4n²-6/20m³-10/15mn

R= -6/20m³+4n²

e) (x²+x+5)(y)+(y²+y+9)(x)

x²y+xy+5y+xy²+xy+9x

R= 2x²y+2xy+9x+5y

f) (4m+3)-(3m+2)(7m-2)

4m+3-21m²+6m-14m+4

R= -21m²-4m+7

g) [-5x-3(2x+1)+3][-7x+(2x-1)]

[-5x-6x-3+3][-7x+2x-1]

35x²+45x²+21x-21x-10x²-12x²-6x+6x+5x+6x+3-3

R= 55x²+11x

h) (1/4a+b)(1/4a+b)-(1/16a²+b²)

1/8a²+1/4ab+1/4ab+b²-1/16a²-b²

R= 1/16a²+1/2ab

i) [-4x+(y+1)(y-1)]-(x+1)

-4x+y²-y+y-1-x-1

R= -5x+y²-2