Imaginary and Complex Numbers
sqrt(-25)
5i?
(4-9i)+(7-2i)
11-11i?
3a^2-4a-4=0
a=3, a=-2/3?
Simplify the square root: (no decimal answers allowed)
sqrt(18)
3sqrt(2)?
x^2-8x+16=0
(sqrt(-6))^2
(-6+4i)-(12+i)
-18+3i
Solve using the quadratic formula, and show answer in simplest form.
x^2-4x-7=0
2+-sqrt(11)?
Simplify the square root: (no decimal answers allowed)
sqrt(60)
2sqrt(15)?
Evaluate the discriminant, and state the number and nature of the roots for this quadratic equation.
3x^2+5x=-2
6-sqrt(-100)
6-10i
4i(2-7i)
28+8i
Solve using the quadratic formula, and show answer in simplest form.
x^2+6x=-13
-3+-2i?
Simplify the square root: (no decimal answers allowed)
sqrt(-92)
2isqrt(23)?
Evaluate the discriminant, and state the number and nature of the roots for this quadratic equation.
8x^2=-14x-3
8-sqrt(-40)
8-2isqrt(10)
(4+5i)(2-9i)
What is
53-26i
Solve using the quadratic formula, and show answer in simplest form.
10x^2-11x+9=13x-6x^2
3/4?
Simplify the square root: (no decimal answers allowed)
sqrt(72)
6sqrt(2)?
8x^2+72=0
Evaluate the discriminant, and state the number and nature of the roots for this quadratic equation.(sqrt(-7))^2-sqrt(-56)
-7-2isqrt(14)
(6-11i)^2
-85-132i
Solve using the quadratic formula, and show answer in simplest form.
3x^2+8x+5=-2x^2
(-4+-3i)/5
Simplify the square root: (no decimal answers allowed)
sqrt(-240)
4isqrt(15)?
Evaluate the discriminant, and state the number and nature of the roots for this quadratic equation.
9x^2=-11x-4