Math in Focus Chapter 7 Algebraic Expressions

Evaluate the expression when q = 3; \frac{q}{3} + 4

• 5

• 6

• 1

• 7

9 less than x

• 9 - x

• 9 + x

• x - 9

• x + 9

add five to 7 times w

• 7w + 5

• 5 + 7 - w

• 7 + 5 + w

• 5(7 + w)

x cubed

• x²

• x x 3

• x³

• x + x + x

The expression (l + m) (2m + p) − 2m (p + m) can be simplified as

• 2lm + lp

• 2lm + lp − 2mp 

• 2lm + lp + mp 

• 2lm + lp − mp 

What is the product of (x² − y²) and (3x + 2y)?

• 3x³ − 2y³ + 3x²y + 3xy²

• 3x³ + 2y³ - 2x²y − 3xy²

• 3x³ − 2y³ + 2x²y − 3xy²

• 3x³ − 3y³ + 2x²y − 3xy²

(x² - y²) × (x² + y²) = ______

• 2x² + 2y²

• x⁴ - y⁴

• x⁴ + y⁴

• 2x⁴

The degree of the polynomial:  4x²y + x² - 2y² is ______

• 2

• 3

• 4

• -2

If a+b=7, ab = 10, find a² + b²

• 28

• 29

• 30

• 27

(m+1)(m+3) is of the form

• none of these