Algebra 1 Test 5 Review

Which expression is equivalent to this expression?

x(4x + 7)

• 4x² + 7

• 4x² + 7x

• 4x² - 7x

• 5x + 7

Find the product of (3x - 2) and (5x + 6)

• 15x² - 12

• 15x² + 8x - 12

• 8x + 4

• 15x² + 28x + 12

Factor completely 2x² - 2x - 12

• 2(x² - x - 6)

• (2x - 6)(x + 2)

• 2(x - 3)(x + 2)

• (x - 3)(2x + 4)

What is the correct factorization of x² - 4x - 21

• (x - 21)(x + 1)

• (x + 7)(x - 3)

• (x + 21)(x - 1)

• (x - 7)(x + 3)

Solve 36x² = 144

• x = ± 2

• x = ±12

• x = ± 4

• x = ± 6

Use the graph to find the solutions of

x² - x - 2 = 0

• (0,-2)

• x = -2, x = 1

• (-2,0)

• x = 2, x = -1

Find the roots of r² - 13r - 48 = 0

• r = 4, r = -12

• r = -3, r = 16

• r = 3, r = -16

• r = -4, r = 12

Solve 0 = x² - 4x - 21

• x = -7, x = 3

• x = 4, x = -4

• x = 7, x = -3

• x = 21, x = -1

Complete the square for x² - 12x + ? ;

Then write the resulting expression as a binomial squared.

• 36; (x + 6)²

• -36; (x + 6)²

• 36; (x - 6)²

• -36; (x - 6)²

Which equation shows x² + 6x + 7 = 0 after the method of completing the square has been applied?

• (x + 2)² + 3 = 0

• (x + 3)² - 2 = 0

• (x + 6)² - 29 = 0

• x² = -(6x + 7)