Rozwiąż równania:
a) (x+3) do kwadratu -1=x do kwadratu
b) x(x-1)-4=(x-2)(x+2)-x
c) 4x do kwadratu -(1-2x) do kwadratu +2x=11
d) 0=4(10-5x)-3(-3x-5)
e) x-4/2 +x+3/5=2(x+3)/3
f) 2x-1/3x+2/5=1/3(4+5x)-7/30
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a)x^+9-1=x^,x^+x^=-9+1,2x^=-8/2,x^=-4 b)x-x-4=x+2x-2x-4-x,x=-4+4,x=0 c)4x^-1-4x^+2x=11,2x=11-1,2x=10/2,x=5 d)0=40-20x+9x+15,20x-9x=-15-40,11x=-55/11,x=-5 e)x+x-2x=2-3/5+6/3,0=2-9/15+30/15,0=2-39/15,0=-9/15,0=-3/5 f)2x-1/3x-5/3x=-7/30-2/5,2x-4/3x=-7/30-12/30,-2/3x=-19/30/-2/3,x=57/60