Functions
Quadratics
Variable Isolation
100

F(x) = 4x + 12

what is x when x = 48 

 x = 9

100

x2-12x+36

put it in factored form

(x-6)(x-6) or (x-6)2

100

5+x=10

find x

x = 5

200

F(x) =  12x + 72

what is the answer when x is 5 

F(5) = 132

200

(x+2)(3x+4)

put it in standard form

3x+10x+8

200

(2*4)+x =25

find x

x = 17

300

F(x) = 8x+72*3

what is the answer when x is 7 

F(x) = 272

300

A=2

B=-4

C=3

use the quadratic formula

x=3 or x =-1

300

V=3.14r2h

find r2

V/3.15h=r2

400

F(x) = 13x+57*3-7x

find the answer when x is 12 

F(12) = 243

400

x2-12x-13

put it in standard form

(x-13)(x+1)

400

7+(4*9)-x=57

find x 

x = -14

500

F(x)=12x-32*3+47+9x-78

find the answer when x is 15

F(15)=188

500

Factored this

12x2+46x+24

(6x+5)(2x+6)

500

(72+58)-67+x = 100

find x

x = 37

M
e
n
u