-2(3x+3)+2x=2x(2x-2)+3x -(x+2)+2x+4=2(2x-4) -6(3x-3)=-8(2x-2) 3(3x-3)=2x-7 2(2x+4)+3x=-(2x+4)+3 Równania...

-2(3x+3)+2x=2x(2x-2)+3x -6x-6+2x=4x2-4x+3x -6x+2x-4x2+4x-3x=6 -7x-4x2=6 -(x+2)+2x+4=2(2x-4) -x-2+2x+4=4x-8 -x+2x-4x=8+2-4 -3x=6 3x=-6 x=-6/3 x=-2 -6(3x-3)=-8(2x-2) -18x+18=-16x+16 -18x+16x=16-18 -2x=-2 x=1 3(3x-3)=2x-7 9x-9=2x-7 9x-2x=-7+9 7x=2 x=7/2 x=3 i 1/2 2(2x+4)+3x=-(2x+4)+3 4x+8+3x=-2x-4+3 4x+3x+2x=-4+3-8 9x=-9 x=-1

A. -2(3x+3)+2x=2x(2x-2)+3x -6x-6+2x=4x²-4x+3x /+6x+6-2x 4x²-4x+3x+6x+6-2x=0 4x²+3x+6=0 Δ=b²-4ac=3²-4*4*6=9-96<0 BRAK ROZWIĄZANIA B. -(x+2)+2x+4=2(2x-4) -x-2+2x+4=4x-8 x+2=4x-8 /-x 2=3x-8 /+8 10=3x /:3 x=10/3=3 i 1/3 C. -6(3x-3)=-8(2x-2) -18x+18=-16x+16 /+18x 18=2x+16 /-16 2=2x /:2 x=1 D. 3(3x-3)=2x-7 9x-9=2x-7 /-2x 7x-9=-7 /+9 7x=2 /:7 x=2/7 E. 2(2x+4)+3x=-(2x+4)+3 4x+8+3x=-2x-4+3 7x+8=-2x-1 /+2x 9x+8=-1 /-8 9x=-9 /:9 x=-1

-2(3x+3)+2x=2x(2x-2)+3x -6x - 6 + 2x = 4x² - 4x + 3x -4x - 6 = 4x² - x / +3x -6 = 4x² + 2x (niestety nie wiem jak to dokończyć, czy na pewno działanie jest dobrze przepisane?) -(x+2)+2x+4=2(2x-4) -x - 2 + 2x + 4 = 4x - 8 x + 2 = 4x - 8 / + 8 x + 10 = 4x / -x 10 = 3x / :3 x = 3 ⅓ -6(3x-3)=-8(2x-2) -18x + 18 = -16x + 16 / +18x 18 = 2x + 16 / -16 2 = 2x / :2 x = 1 3(3x-3)=2x-7 9x - 9 = 2x - 7 / +9 9x = 2x + 2 / -2x 7x = 2 / :7 x = 2/7 2(2x+4)+3x=-(2x+4)+3 4x + 8 + 3x = -2x -4 + 3 7x + 8 = -2x - 1 / +2x 9x + 8 = -1 / -8 9x = -9 / :9 x = -1