Factoring Polynomials

Factor

n² + 16n + 63

• (n-3)(n-10)

• (n+7)(n-9)

• (n+7)(n+9)

• (n-7)(n+4)

Factor

x² + 9x - 36

Factor

3a² + 4a + 1

• (7a-10)(a-8)

• Not factorable

• (3a+1)(a+1)

• (3a-1)(a-1)

Factor

x² +17x - 60

• (x - 20)(x + 3)

• (x + 12)(x - 5)

• (x - 12)(x + 5)

• (x + 20)(x - 3)

Factor

a² - a - 12

• (a - 4)(a + 3)

• (a + 4)(a - 3)

• (a + 6)(a - 4)

• (a - 6)(a + 4)

What is a method of checking your work when factoring?

• asking the teacher every time

• division

• foil

• assume you're correct

Factor completely: 

3x² + 18x +15

what is the first step of factoring

• 3(x²+6x+5)

• 3(x+5)(x+1)

• (x+5)(x+1)

• Prime

Solve the following:

2x²=98

• 49, -49

• 9.89, -9.89

• 7, -7

Solve using square roots

5b²-4=41

• 9, -9

• 8, -8

• 3, -3

• 5, -5

solve by taking the square root

2(x-3)²-14=18

• 1, 7

• -1, -7

• -1, 7

• 1, -7