6 zadań ponad 30pkt zadania sa w zalacznikach chodzi o zadania:3,4; 7,8;4,5 w zalacznikach.

zadanie 3 a.(x+2)(x+4) =x²+4x+2x+8=x²+6x+8 b.(-3x-4)(5-2x)= -15x+6x²-20+8x=6x²-7x-20 c.(√3+2)(2√3-3)=6-3√3+4√3-6=√3 d.(2√a-√b)(-√b+2√a)= -2√ab - 2√ab +b+4a= -4√ab +b + 4a zadanie 4 a.(1/2 +x)² = 1/4 +x + x² b.(-2a+2b)²=4a²-8ab+4b² c.(2-5x)²=4-10x+25x² d.(-2a-1)²=4a²+4a+1 e.(a-3b)(3b+a)=(a-3b)²=a²-6ab+9b² f.(2/3x-3/4y)(2/3x+0,75y)=(2/3x-3/4y)(2/3x+3/4y)=4/9x²1/2y-1/2x-9/16y² zadanie7 a.3√5=√9*√5=√45 b.2/5√15=√4/25*√15=√60/25 c.2∛1/4=∛8*∛1/4=∛8/4 d.1/2∛-32=∛1/8*∛-32=∛-32/8 zadanie8 a.1/2√72-1/4√32+1/5√50=1/2√2*√36-1/4√2*√16+1/5√2*√25=1/2*6√2-1/4*4√2+1/5*5√2=3√2-√2+√2=3√2 b.0,2∛250-0,25∛128+1/3∛54=0,2∛2*∛125-0,25∛2*∛64+1/3∛2*∛27=0,2*5∛2-0,25*4∛2+1/3*3∛2=∛2-∛2+∛2=∛2 c.2∛-24-∛-81+∛-375=2∛8*∛-3-5∛27*∛-3+∛125*∛-3=2*2∛-3-5*3∛-3+5∛-3=4∛-3-15∛-3+5∛-3=-6∛-3 d.nie potrafie zadanie4 a.[latex]((-1,2) ^{2} )^{-1}=(-1,2)^{-2}= (-frac {12}{10}) ^{-2} = (-frac{10}{12} )= frac{100}{144} [/latex] b.[latex](((3 frac{12}{17} ) ^{5})^{0})^{-11} = (3 frac{12}{17})^0 =1[/latex] c.[latex](((-2,49)^1)^{-1})^{-1} = (-2,49)^1=-2,49[/latex] d.[latex]((- frac{1}{2} )^2)^{-1} * (- frac{1}{2})=(- frac{1}{2} )^1 = -1/2[/latex] zadanie5 a.(5/3*3/10*2/7* - 14/1)³= (-2)3= -8 b. ( 36/25 : 4 4/5)^{-3} = (36/25 *5/24)^{-3} = (3/10) ^{-3} = (10/3) ^3 = 1000/27 c.(4/3*3/4*5/6*12/10)^{-2} = (1)^[-2} =1 d. (- 12/10 : 4/10 * 1/3)^7= ( - 12/10 * 10/4 * 1/3)^7=(-1)^7=-1