Algebra 1

Solving Quadratics By Factoring

100

x² + 16 = 10x

x=2    x=8

200

(x + 3)(x – 5) = –7

x=-2     x=4

300

x(2x – 1) = 3

x=3/2

400

50x² = 72

x=-6/5     x=6/5

500

18x² – 3x = 6

x=2/3    x=-1/2

Finding The Slope

100

x = 3/7y -22?

y = (7/3)x + 51.33

200

2y-3=8x+7

Slope=4

300

(4,9) and (-1,7)

y=2/5x+37/5

400

(3,2) and (7,-4)

y=-3/2x+13/2

500

(6,1) and (9,5)

y=4/3x-7

Solving Quadratics By Square Roots

100

x²-1=24

x=5      x=-5

200

3x²+7=55

x=4     x=-4

300

-2x²+15=x²-12

x=3      x=-3

400

3(x + 7)² – 2 = 22

x=-7+2√2   x=-7-2√2

500

2(x – 4)² + 7 = –20

x=4+3√6/2   x=4-3√6/2