2х²+3х-2=0 х₁=-3+√(9+16) = -3+5 = 0,5 4 4 х₂=-3-√(9+16) = -3-5 = -2 4 4 3х²+8х-3=0 х₁=-8+√(64+36) = -8+10 = 1/3 6 6 х₂=-8-√(64+36) = -8-10 = -3 6 6 -х²+2х+8=0 х₁=-2+√(4+32) = -2+6 = -2 -2 -2 х₂=-2-√(4+32) = -2-6 = 4 -2 -2 -х²+7х-10=0 х₁=-7+√(49-40) = -7+3 = 2 -2 -2 х₂=-7-√(49-40) = -7-3 = 5 -2 -2 9х²-6х+1=0 х₁=6+√(36-36) = 6 = 1/3 18 18