HW: Flashcardizz: complex numbers and factoring

Front

What is the product of (2i)(3i)?

Back

-6

Tags

CCSS.HSN.CN.A.2

Front

How many solutions does a quadratic equation typically have?

Back

Two solutions, unless the discriminant is zero or negative.

Tags

CCSS.HSA-REI.B.4B

Front

What is the result of 4i(-2-8i)?

Back

32 - 8i

Tags

CCSS.HSN.CN.A.2

Front

What is i raised to the power of 7?

Back

-i

Tags

CCSS.HSN.CN.A.2

Front

How do you solve the quadratic equation 5x^2 - 35x + 60 = 0?

Back

Use the quadratic formula or factor to find x = 3 and x = 4.

Tags

CCSS.HSA-REI.B.4B

Front

What is the definition of a complex number?

Back

A complex number is a number that can be expressed in the form a + bi, where a and b are real numbers and i is the imaginary unit.

Tags

CCSS.HSN.CN.A.1

Front

What is the imaginary unit 'i'?

Back

The imaginary unit 'i' is defined as the square root of -1.

Tags

CCSS.HSN.CN.A.1

Front

What is the discriminant in a quadratic equation?

Back

The discriminant is the part of the quadratic formula under the square root, given by b^2 - 4ac.

Tags

CCSS.HSA-REI.B.4B

Front

What does it mean if the discriminant is positive?

Back

If the discriminant is positive, the quadratic equation has two distinct real solutions.

Tags

CCSS.HSA-REI.B.4B

Front

What does it mean if the discriminant is zero?

Back

If the discriminant is zero, the quadratic equation has exactly one real solution (a repeated root).

Tags

CCSS.HSA-REI.B.4B