Exit Ticket #35 adding subtracting complex numbers

Front

What is 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, defined as the square root of -1.

Front

How do you add complex numbers?

Back

To add complex numbers, combine the real parts and the imaginary parts separately. For example, (a + bi) + (c + di) = (a + c) + (b + d)i.

Front

How do you subtract complex numbers?

Back

To subtract complex numbers, subtract the real parts and the imaginary parts separately. For example, (a + bi) - (c + di) = (a - c) + (b - d)i.

Front

What is the imaginary unit 'i'?

Back

The imaginary unit 'i' is defined as the square root of -1, which means i^2 = -1.

Front

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

Back

7 - 3i.

Front

Simplify: (4 - 2i) - (3 + 6i)

Back

1 - 8i.

Front

What is the result of 3i - (4 + 7i)?

Back

-4 - 4i.

Front

Simplify: (10 + 15i) - (48 - 30i)

Back

-38 + 45i.

Front

What is the real part of a complex number?

Back

The real part of a complex number a + bi is the value 'a'.

Front

What is the imaginary part of a complex number?

Back

The imaginary part of a complex number a + bi is the value 'b'.