Rozwiąż równanie a) x^2-2x-48=0 b) -3-7x+6^2=0 Wyznacz zbiór rozwiązań równania a) (5x-6)(6x-4)(2x+1)=0 b) 12x(3x+3)(2x+7)=0 c) 3x^2(3x+1)^2(3x+4)=0 d) (4-3x)(2-3x)^2(x-2)=0 e) 5x^3(7x-7)(3x+3)=0 f) x^4(x-3)^3(x+5)^2=0

a) Δ=4+192=196 √Δ=14 x1=[latex] frac{2-14}{2} [/latex]=[latex] frac{-12}{2} [/latex]=-6 x2=[latex] frac{2+14}{2}= frac{16}{2}=8 [/latex] b)Δ=49+72=121 √Δ=11 x1=[latex] frac{7-11}{12} = frac{6}{12} = frac{1}{2} [/latex] x2=[latex] frac{7+11}{12} = frac{18}{12} = frac{3}{2} [/latex] a)x=[latex] frac{6}{5} [/latex]  x= [latex] frac{4}{6} [/latex]  x=-[latex] frac{1}{2} [/latex] b)x=0 x=-1 x=-[latex] frac{7}{2} [/latex] c)x=0   x=-[latex] frac{1}{3} [/latex] x=-[latex] frac{4}{3} [/latex] d)x=[latex] frac{3}{4} [/latex] x=[latex] frac{3}{2} [/latex] x=2 e)x=0 x=1 x=-1 f)x=0 x=3 x=-5