Question

23. Reduce. a) 2(3x - 1) + 3(x + 2) b)3(x2 - 2x - 1) - 2(x + 5) c) 4(2x2 - 5x + 3)-3(x2 + x + 1) d) 6(3x2 - 4x + 4) - 5(3x2 - 2x + 3) - х - - -​

Answer 1

Respuesta:

a) 2(3x-1)+3(x+2)=6x-2+3x+6=9x+4

b) 3(2x-2x-1)-2(x+5)=6x-6x-3-2x-10=-3-2x-10=-13-2x

c) (2x²-5x+3)-3(2x+x+1)=2x²-5x+3-6x-3x-3=2x²-14x

d) 6(3x²-4x+4)-5(3x²-2x+3)-x=18x²-24x+24-15x²+10x-15=

=3x²-14x+9