Răspunsuri

2014-03-09T21:57:09+02:00
A) x²-2x+1-x-2-(4x²+8x+4)=x²-2x+1-x-2-4x²-8x-4=
=-3x²-11x-5
b) -√2x+x²-(4-4√2x+2x²)=-√2x+x²-4+4√2x-2x²=
=-x²+3√2x-4