Algebra Review

The interval [-3, 20) can be expressed as

• {x | x ≤ -3 or x > 20}

• {x | x < -3 or x ≥ 20}

• {x | -3 ≤ x < 20}

• {x | -3 < x ≤ 20}

Evaluate: 3|4 - |-12||

• 24

• 48

• -24

• -48

3(x² - 2x - 7) - 5(x² - 3x + 1) =

• -2x² - 21x - 26

• -2x² - 21x - 16

• -2x² + 9x - 16

• -2x² + 9x - 26

(x + 3y)(2x - y) =

• 2x² + 5xy - 3y²

• 2x² + 7xy - 3y²

• 2x² - 3y²

• 2x² + 6xy - 3y²

(y + 2)³ =

• y³ + 3y² + 3y + 1

• y³ + 6y² + 6y + 2

• y³ + 6y² + 12y + 8

• 2y³ + 6y² + 6y + 2

(2x - 5)(x² + 3x - 7) =

• 2x³ + x² - 29x + 35

• 2x³ - 5x² - 15x + 35

• 2x³ - x² - x + 35

• 2x³ + x² + x + 35

x² + 7x - 18 =

• (x + 2)(x - 9)

• (x + 6)(x - 3)

• (x - 2)(x + 9)

• (x - 6)(x + 3)

The number in front of the variable in a term

• constant of proportionality

• coordinate

• coefficient

• constant

In an expression, a term with no variable

• coefficient

• constant

• constant of proportionality

• converse

How many terms are in this math expression?

-x - 2y - x² + 3x + 4

• 2

• 3

• 4

• 5