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a fost răspuns

Calculati x•x+x+x:x=
(X+4)(x-3)-x+12=
3(x²-2x-2)+x(6-3x)=
(x•x²•x³•x⁴):x la a 10•x=
(2x+1)²-(2x-1)²=
(x²+x+1)²=
Va rog URGEEEENT

Răspuns :

a) =x^2+x+1
b) =x^2 +4x-3x-12 =x^2+x-12
c) =3x^2 -6x-6+6x-3x^2 = -6 
d) =(axa^2xa^3xa^4):a^10xa=a^10:a^10xa=1xa=a
e) (2x+1)²-(2x-1)²= (2x+1+2x-1)(2x+1-2x+1) =4x(2)=8x
f) (x²+x+1)²= x^4 +x^2+1+2x^3 +2x^2+2x

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