Factoring

Factor completely
d² - 10d + 25

• (d + 5) (d - 5)
• (d - 15) (d + 10)
• (d + 5) (d - 20)
• (d - 5) (d - 5)

Tags

CCSS.HSA.APR.C.4

Factor completely
6k² + 21k - 15

• 3(2k² + 7k - 5)
• (6k + 5)(k - 5)
• 3(2k+5)(k-2)
• Not Factorable

factor completely
r² - 12r + 27

• (r - 3)(r + 9)
• (r + 3) (r + 9)
• (r - 3) (r - 9)
• (r + 3) (r - 9)

Factor completely
x² + 27x - 160

• (x+15)(x-14)
• (x-5)(x+32)
• (x+14)(x-15)
• not factorable

factor completely 
81m² - 1 

• not factorable
• (m-9)(m+9)
• 9m(9m-1)
• (9m-1)(9m+1)

Tags

CCSS.HSA.APR.C.4

factor completely 
b² + 30b - 216

• (b+18)(b+12)
• (b-6)(b+36)
• (b-16)(b+14)
• (b+11)(b-16)

Factor completely 
2c² + 4c - 84

• (c-6)(2c+14)
• (c+7)(2x-12)
• (c-4)(2c+21)
• 2(c+7)(c-6)

Solve
4m² - 100 = 0

• m=25, -25
• m=96
• m=5, -5
• m=-96

Tags

CCSS.8.EE.A.2

Solve
a² + 2a - 24 = 0

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

Tags

CCSS.HSA-REI.B.4B

Solve
2x² + 17x + 21 = 0

• x= ^-21/₂, -17
• x= ²/₃, 16
• x=-7, ^-3/₂
• x=15, -³/₇

Tags

CCSS.HSA-REI.B.4B