Question

A) (-15):3-5x(-1)=
b)3x(-7)-7x(-2)=
c)6x(-4)+5x(-9)=
d)(-18):9-(-27):(-1)=

Answer 1

a) (x + 1)(x+2)(x+3) = (x^2 + 2x + x + 2)(x+3) = (x^2 + 3x + 2)(x+3) = x^3 + 3x^2 + 3x^2 + 9x + 2x + 6 = x^3 + 6x^2 + 11x + 6

b) (x - 2)(x+5)(2x-1) =(x^2 + 5x - 2x - 10 )( 2x - 1) = (x^2 + 3x - 10 )( 2x - 1) = 2x^3 -2x^2 + 6x^2 -3x - 20x + 10 = 2x^3 + 4x^2 - 23x + 10

c) (x-4)(x+1)^2 = ( x - 4 ) ( x2 + 2x + 1) = x3 + 2x2 + x - 4x2 - 8x - 4 = x3 - 2x2 -7x - 4

d)(2x-3)^2(x+2) = (4x2 - 12x + 9) ( x + 2) = 4x3 + 8x2 - 12x2 - 24x + 9x + 18 = 4x3 - 4x2 - 15x + 18
o to ci chodziło bo jak nie to sory