Equations and Complex Numbers

• i

• -1

• -i

• 1

• 6 + 11i

• 6 - 5i

• -5

Use the Discriminant to determine the type of solutions: -3x^2+7x-1=0

• real

• 2 real

• 2 imaginary

• 3 real

Solve.   x² = √-90

• x = 3√10

• x = 9i√10

• x = ± 3√10

• x = ± 3i√10

Find all solutions to each equation, real or imaginary.

x²=-36

• 6,-6

• 6

• -6

• 6i, -6i

y² = -49

• -7,7

• -7,-7

• +-7i

• +-7(1+6)

Explain why (x+5)² = -10 has no real solutions.

• x² can never equal a negative number because a number times itself will always be postive.

• x² cant be negative

• There is not a number +5 that equals -10.

• 2

• -2

• 4i

• -4i

• 2i

• -2i

On a scale of 1 to 5 rate your understanding of how to solve complex number equations

• I have no clue what the lesson is about or what complex Numbers are :{

• I don't understand how to solve complex numbers and need a in depth lesson on the subject

• I have a basic understanding of how to solve complex number equations but I need a lot of help.

• I understand how to solve Complex Numbers equations, However I need practice.

• I understand how to solve complex number equations and I am ready for the exit ticket.

Use square roots to solve the equation x^2=-25 over the complex numbers. Select any solutions that apply.

• –5

• –5i

• 5i