Question

1)Sa se calculeze:
a)x(x-2)(x+1)-3
b)x²(x-1)(2x-3)
c)5x(2x-1)(x-4)
d)(5x-1)(5x+1)(-1supra5x²)
e)(2x-3)²(x²+x+1)
f)(x+t)²
g)(x-t)²
h)(√2xy)⁶:(-√2xy)⁵

2)a)2x(x+3)+(x-1)²-x(x+2)
b)-10x(x²+x-1)+(x-1)(x+2)-(x+3)(x-3)
c)(2x+5)³:(2x+5)²+(3x+1)²-(3x-1)²
d)15x(2x-3)-(5x)²:(-5x)+(x+1)³:(x+1)²

Answer 1

1).a).x(x-2)(x+1)-3=x(x²+x-2x-2)-3=(x³+x²-2x²-2x)-3=x³-x²-2x-3
b).x²(x-1)(2x-3)=x²(2x²-3x-2x+3)=2x$^{4}$-3x³-2x³+3x²
c).5x(2x-1)(x-4)=5x(2x²-8x-x+4)=5x(2x²-7x+4)=10x³-35x²+20x
d).(5x-1)(5x+1)(-1/5x²)=(25x²-1)(-1/5x²)=125x$^{4}$-1/5x²
e).(2x-3)²(x²+x+1)=(4x²-12x+9)(x²+x+1)
f).(x+t)²=x²+2xt+t²
g).(x-t)²=x²-2xt+t²
Cu atât te-am putut ajuta !

Answer 2

a.x(x^2-x-2 )-3=x^3-x^2-2x. B.x^2(2x^2-5x+3)=2x^4-5x^3+3x^2. C.5x(2x^2-9x+4)=10x^3-45x^2+20x. D.(5x^2-1)*(-1/5x^2)=-1+1/5x^2. E.(4X^2-12X+9)(X^2+x+1)=4x la a patra -8x la a3a +13x pătrat+9. F.x pătrat +2xt+t patrat. G. X pătrat -2xt+t pătrat H.-1 2.A 2 x la a3 a + 6x+ x pătrat -2x+1-x pătrat -2 x=2x la a treia +2x+1. B.-10x la a treia -10x la a doua+10x+x pătrat-x+2-x patrat -9=. c.2x+5+12x= 14x+5. D.30x patrat- 45x+5x+1=30x patrat-40x+1. Sper ca te.am ajutat!