Distributing Negative Signs in Expressions

The video tutorial explains how to distribute a negative sign across terms in parentheses, emphasizing that a negative sign changes the sign of each term. It introduces the concept of distributing a negative one as an alternative method and generalizes the concept using variables. The tutorial provides examples and evaluates expressions using specific values for variables, reinforcing the understanding of distributing negative signs.

What happens to each term in a group when a negative sign is distributed across it?

• Only the first term changes sign.

• Each term becomes positive.

• The terms remain unchanged.

• Each term becomes negative.

How can a negative sign be interpreted when applied to a group of terms?

• As a positive one.

• As a positive two.

• As a zero.

• As a negative one.

What is the result of distributing a negative sign over the expression (8 + 2)?

• 8 + 2

• -8 + 2

• 8 - 2

• -8 - 2

When distributing a negative sign, what does it do to the signs of the terms inside the parentheses?

• It subtracts one from each term.

• It doubles the terms.

• It changes the sign of each term.

• It adds one to each term.

In the expression -A + B, what happens when a negative sign is distributed?

• A becomes positive and B becomes negative.

• A becomes negative and B remains unchanged.

• Both A and B become positive.

• Both A and B become negative.

What is the result of distributing a negative sign over the expression (x + a - 3)?

• x + a - 3

• -x - a + 3

• -x + a - 3

• x - a + 3

How does the expression -2x - 3 + y - 5 change when a negative sign is distributed?

• 2x + 3 - y + 5

• -2x + 3 + y - 5

• 2x + 3 - y - 5

• 2x - 3 + y + 5

If a = 7, b = -3, and c = 5, what is the result of the expression a + b - c?

• 9

• 0

• -1

• 5

What is the result of the expression -b + c when b = -3 and c = 5?

• 2

• -2

• 8

• 0

For a = 7, b = -3, and c = 5, what is the result of a - b - c?

• 0

• 9

• 15

• 5