Understanding Signs in Mathematical Expressions

The video tutorial explores the signs of mathematical expressions involving multiplication and division of positive and negative numbers. It explains how the sign of a product or quotient is determined by the number of negative factors involved. The tutorial also highlights the impact of zero in multiplication, emphasizing that any product involving zero results in zero. Additionally, it covers expressions with negative powers, demonstrating how the sign changes based on the number of negative factors.

What is the sign of a product when an odd number of negative numbers are multiplied together?

• Undefined

• Zero

• Negative

• Positive

If you divide a negative number by a positive number, what is the sign of the result?

• Negative

• Positive

• Zero

• Undefined

What happens to the product of an expression if one of the factors is zero?

• It remains unchanged

• It becomes zero

• It becomes negative

• It becomes positive

In an expression, if q equals zero, what is the overall product?

• Negative

• Positive

• Undefined

• Zero

What is the sign of a negative number raised to an even power?

• Positive

• Negative

• Zero

• Undefined

How does a negative sign in front of a positive expression affect its sign?

• Makes it positive

• Makes it zero

• Makes it negative

• No effect

What is the sign of a negative number raised to an odd power?

• Undefined

• Zero

• Negative

• Positive

If you divide a negative number by another negative number, what is the sign of the result?

• Zero

• Negative

• Positive

• Undefined

What is the sign of a negative number multiplied by a positive number?

• Undefined

• Negative

• Positive

• Zero

If x is positive and y is negative, what is the sign of the product of negative x and y?

• Undefined

• Zero

• Negative

• Positive