Chapter 4 Review

7r³-8r²+42r-48

• (r²+6)(7r+8)
• (r²+6)(7r-8)
• (r²+6)(r²+8)
• (r²+6)(7r+6)

30x³+15x²-18x-9

• (5x²-3)(6x+1)
• (5x²-3)(6x+3)
• 3(5x²+3)(2x-1)
• 3(5x²-3)(2x+1)

Decide if (x-3) is a factor of 3x³+10x²-x-12

• Yes, it is a factor
• No, it is not a factor

Tags

CCSS.HSA.APR.B.2

Solve
4m² - 100 = 0

• m=25, -25
• m=96
• m=5, -5
• m=-96

Tags

CCSS.8.EE.A.2

7x² - 26x - 8 = 0

• x = -1 and x = -7/8
• x = 4 and x = -2/7
• x = -4 and x = 2/7
• x = 4 and x = -7/2

Solve the equation by factoring.
x² + 13x + 40 = 0

• -8, 5
• -40, -1
• 5, 8
• -8, -5

Tags

CCSS.HSA-REI.B.4B

Solve using Zero-Product Property.
(2x-2)(5x+5) = 0

• x = -1
• x = -1 or x = 1
• x = 1

Solve x³-2x²-5x+10 = 0

• -2, i √5 , -i√5

• 2, √5, -√5

• -2, -5

• 2,√5

Find the roots of x(3x - 5)(x - 4) = 0

• 1, -5/3 , -4

• 0, -5/3 , -4

• 0, 3/5, 4

• 0, 5/3 , 4

x³ - 8x² = 0

• 0, 8

• 1, -8

• 1, 8

• 0, -8

Tags

CCSS.HSA-REI.B.4B