Solving Quadratics

Factor
x² - 9x + 20

• (x - 10)(x - 2)
• (x - 20)(x - 1)
• (x - 10)(x + 2)
• (x - 5)(x - 4)

Tags

CCSS.HSA.SSE.A.2

CCSS.HSA.SSE.B.3

Factor completely: 
3x² + 18x +15
Hint: Factor GCF first.

• 3(x² + 6x + 5)
• (x + 5)(x + 1)
• 3(x + 5)(x + 1)
• Not Factorable

Factor:
18a²-15a

• 15a(3a-1)
• 3a(6a-1)
• 3(6a-5)
• 3a(6a-5)

Tags

CCSS.HSA.APR.A.1

CCSS.HSA.SSE.A.2

CCSS.HSA.SSE.B.3

Solve:
n²+8 = 6n

• n=2 or n=4
• n=-2 or n= -4
• n=0 or n=2
• n=4 or n=0

Factor
r² -16r + 60

• (r - 15)(r + 4)
• (r - 6)(r + 10)
• (r - 6)(r - 10)
• (r +30)(r - 2)

Tags

CCSS.HSA-REI.B.4B

Solve
a² + 2a - 24 = 0

• a = -6, 4
• a = 6, -4
• a = 12, -2
• a = 8, -3

Tags

CCSS.HSA-REI.B.4B

Solve using square roots.

• A
• B
• C
• D

Tags

CCSS.8.EE.A.2

Solve using square roots.

• A
• B
• C
• D

Tags

CCSS.HSA-REI.B.4B

Solve using square roots.
5b² - 4 = 41

• b = 9, b = -9
• b = 3, b = -3
• b = 8, b = -8
• no solution

Tags

CCSS.8.EE.A.2

Solve by taking square roots:
5m² + 1 = 6

• m = 0
• m = 1 or -1
• m = √7
• m = 7/5 m = -7/5

Tags

CCSS.HSA-REI.B.4B