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Complex numbers
Solve by Factoring
Solve by SQR
Solve by CTS
Solve by QF
100

-sqrt(-11)

-isqrt(11) or-sqrt(11)i

100

Solve by factoring.

x^2-49=0

x={-7,7}

100

Solve using Square Root Method.

x^2-64=0

x={-8,8}

100

Solve by Completing the Square.

x^2-12x+36=49

x={-1,13}

100

Solve using the Quadratic Formula.

2x^2+10x+8=0

x={-4,-1}

200

(4-3i)+(-2+5i)

2 + 2i

200

Solve by factoring.

x^2-9x-10=0

x={-1,10}

200

Solve using Square Root Method.

6x^2-24=0

x={-2,2}

200

Solve by Completing the Square.

x^2-4x+3=0

x={1,3}

200

Solve using the Quadratic Formula.

10x^2-x-2=0

x={-2/5,1/2}

300

(4-3i)(-2+5i)

7+26i

300

Solve by factoring.

x^2-6x-64=6x

x={-4,16}

300

Solve using Square Root Method.

x^2+25=0

{5i, -5i}

300

Solve by completing the square.

x^2-2x+1=32

x={1+-4sqrt2}

300

Solve using the Quadratic Formula.

-x^2-2x+7=0

x={-1+-2sqrt2}

400

(-5-i)-(7+4i)

-12-5i

400

Solve by factoring.

x^2=-11x^2+8x

x={0,-2/3}

400

Solve using Square Root Method.

49x^2-25=0

x={-5/7,5/7}

400

Solve by Completing the Square.

2x^2+x-3=0

x={-3/2,1}

400

Find the discriminant and state the type and number of roots.

-2x^2+8x=20

-96, 2 complex roots

500

(4+2i)/(1-i)

1+3i

500

Solve by factoring.

6x^2+11=-25x

x={-11/3,-1/2}

500

Solve using Square Root Method.

x^2-5=19

x={+-2sqrt6}

500

Solve by completing the square.

x^2-2x+3=0

x={1+-isqrt2}

500

Solve using the Quadratic Formula.

x^2+3=8x-x^2

x={(4+-sqrt10)/2}