math 2 final

rectangle prism volume

100

V= 7 x 7 x 2

V=92

200

V= 4 x 3 x 7

V=84

300

v=6 x 2 x 5

v=60

400

v= 3 x 8 x 4

V= 96

proportions

100

7/2 = x/8

x=28

200

4/x = 2/7

x=14

300

x-1/6 = 13/19

x=97/19

400

k-9/9 = 9/10

k=171/10

Discriminant

100

2x² + 8x - 8 = 0

2 real solutions

200

5x² + x + 1= 0

0 real solutions 

300

x² + 6x + 1 = 0 

2 real solution 

400

3x² + 3x - 3 =0

2 year solutions 

solve by factoring

100

3x⁴ - 9x⁵=0

x=1/3

200

x² - 12x + 27 = 0

(x,-3) (x,-9)

300

x² - 64 = 0

(x+8) (x-8)

400

2x² + 5x + 3 = 0

(x+1) (x²+3)