Evaluate
If f(x)=3x+2, find f(4)
What is 14?
x^2-9=0
What is (x-3)(x+3)?
2x=18
(x+3)(x+5)
x^2+8x+15
(x+3)/(x-2)
x!=2
If f(x)=x^2-5 find f(5)
What is 20?
x^2-144=0
What is (x-12)(x+12)?
x-5=9
What is x=14?
(x-7)(x-2)
x^2-9x+14
(2x^2+5x)/(x^2-16)
x!=4,-4
If f(x)=2x-7 find f(-3)
What is -13?
x^2+5x+6=0
What is (x+2)(x+3)?
x+7=12
What is x=5?
(2x+4)(x-1)
2x^2+2x-4
(x^2-9)/(x+3)
x!=-3
If f(x)=x^2+2x find f(2)
What is 8?
3x^2+6x=0
What is 3x(x+2)?
3x+2=17
What is x=5?
(3x-2)(x+6)
3x^2+16x-12
(3x-7)/(x^2+x-6)
x!=-3,2
If f(x)=x^2+8x+15 find f(1)
What is 24?
2x^2+7x+3=0
What is (2x+1)(x+3)?
x/4=6
What is x=24?
(4x+1)(2x+3)
8x^2+14x+3
(4x^3+2x)/(2x^2-x)
x!=0,1/2