Factor Friday with roots #1

Fully Factor the Following
25x²-81

• (5x-9)²
• (5x+9)(5x-9)
• 25(x-9)²
• (9x+5)(9x-5)

Tags

CCSS.HSA.APR.C.4

The difference of squares says

• a² - b² =
  (a + b)(a - b)
• a² + b² =
  (a + b)(a - b)
• a² + b² =
  (a + b)(a + b)
• a² - b² =
  (a - b)(a - b)

Tags

CCSS.HSA.APR.C.4

Find GCF 15n³+25n²

• 5
• 15n
• 5n²
• 5n

Factor:
 2m² + 3m - 9

• 2(m + 3)(m - 3)
• (2m - 3)²
• (m + 3)(2m - 3)
• (2m + 3)(m - 3)

Factorly Completely: 2x² - 7x + 6

• (x -1)(2x - 6)
• (x - 3) (2x - 2)
• (x - 2) (2x - 3)
• (x - 6) (2x - 1)

x² - 25

• ( x + 5 ) ( x - 5 ) 
• ( x - 5 ) ( x - 5 ) 
• ( x + 25 ) ( x - 25 ) 
• Prime

Tags

CCSS.HSA.APR.C.4

Factor
x² -16x + 48

• (x - 12)(x - 4)
• (x + 6)(x - 8)
• (x + 12)(x - 4)
• (x -16)(x - 3)

Factor
a² - a - 12

• (a - 4)(a + 3)
• (a + 6)(a - 4)
• (a - 6)(a + 4)
• (a + 4)(a - 3)

Solve by factoring: x² - 9x + 20 = 0

• x = -4 and x = -5
• x = 20 and x = -9
• x = 4 and x = 5
• x = -4 and x = 5

Tags

CCSS.HSA-REI.B.4B

Solve for the values of x:

(2x - 1)(x + 4) = 0

• x=1/2, x= -4

• x=1/2, x= 4

• x= 1, x=-4

• x=-2.5, x=4