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Solve: 2x2−x−1=02x^2-x-1=02x2−x−1=0
x=1,x=−12x=1,x=-\frac{1}{2}x=1,x=−21
x=1,x=1x=1,x=1x=1,x=1
Solve: x2−50=0x^2-50=0x2−50=0
x=−52,x=52x=-5\sqrt{2},x=5\sqrt{2}x=−52,x=52
x=1,x=52x=1,x=5\sqrt{2}x=1,x=52
Solve: 3x2−5x+2=03x^2-5x+2=03x2−5x+2=0
x=1,x=23x=1,x=\frac{2}{3}x=1,x=32
Solve: x2−16=0x^2-16=0x2−16=0
x=−3,x=−1x=-3,x=-1x=−3,x=−1
x=4,x=−4x=4,x=-4x=4,x=−4
Solve: x2−6x−16=0x^2-6x-16=0x2−6x−16=0
x=8,x=−2x=8,x=-2x=8,x=−2
Solve: x2+2x+1=0x^2+2x+1=0x2+2x+1=0
x=−1,x=−1x=-1,x=-1x=−1,x=−1
Solve: x2−2x+1=0x^2-2x+1=0x2−2x+1=0
x=−3/2,x=2x=-3/2,x=2x=−3/2,x=2
Solve: x2+2x−2=0x^2+2x-2=0x2+2x−2=0
x=−1+3,x=−1−3x=-1+\sqrt{3},x=-1-\sqrt{3}x=−1+3,x=−1−3
Solve : :x2−4=0.:x^2-4=0.:x2−4=0.
x=−2,x=2x=-2,x=2x=−2,x=2
It is done.