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Solve the Most Logical Way
Solve by taking the Square Root
Solve by Factoring
Solve by Completing the Square
Quadratic Formula
100
x^2+6x+9=0
x=-3
100
x^2=9
x=3, -3
100
x^2+13x+42
(x+7)(x+6)
100
x^2+6x-7=0
x=-7, 1
100
x^2-10x+2=0
x=0.20416848, 9.7958315
200
x^2-9=0
x=3, -3
200
x^2-9=7
x=4, -4
200
x^2+5x-36
(x-4)(x+9)
200
x^2+6x-10=0
x=-7.3588989, 1.3588989
200
x^2+4x-9=0
x=-5.6055513, 1.6055513
300
x^2+6x-10
x=-7.359, 1.359
300
x^2-2(10)(2)=9
x=7, -7
300
x^2+10x+25
(x+5)(x+5)
300
x^2+8x=0
x=-8, 0
300
x^2+323x-6=0
x=-323.01857, 0.018574783
400
x^2-2x+4
no zeros
400
x^2-25=0
x=5, -5
400
2x^2+x-3
(x-1)(2x+3)
400
x^2+4x+4=0
x=-2
400
x^2-5x-3=0
x=-0.5413812, 5.5413813
500
x^2+32x+40=0
x= -30.696938, -1.3030615
500
x^2-64=17
x=9, -9
500
3x^2+37x-26
(x+13)(3x-2)
500
x^2+6x-3=0
x=-6.4641016, 0.46410162
500
x^2+20x+6=0
x=-19.69536, -0.30464029