а) x²+2x-35=0
D=4+140=144
x₁=(-2+12)/2=5
x₂=(-2-12)/2=-7
б) 3x²+x-2=0
D=1+24=25
x₁=(-1+5)/2=2
x₂=(-1-5)/2=-3
а) x^2 + 2x - 35 = 0
D = 2^2 - 4*1*(-35) = 144
X1 = -2 +12/2*1 = 5
X2 = -2-12/2*1 = -7
б) 3x^2 + x -2 = 0
D = 1^2 - 4*3*(-2) = 25
X1 = -1 + 5/2*3 = 2/3
X2 = -1 - 5/2*3 = -1
а) x²+2x-35=0
D=4+140=144
x₁=(-2+12)/2=5
x₂=(-2-12)/2=-7
б) 3x²+x-2=0
D=1+24=25
x₁=(-1+5)/2=2
x₂=(-1-5)/2=-3
а) x^2 + 2x - 35 = 0
D = 2^2 - 4*1*(-35) = 144
X1 = -2 +12/2*1 = 5
X2 = -2-12/2*1 = -7
б) 3x^2 + x -2 = 0
D = 1^2 - 4*3*(-2) = 25
X1 = -1 + 5/2*3 = 2/3
X2 = -1 - 5/2*3 = -1