Review week 4

Solve by finding square roots

100

(x-4)² = 25

What is x = 9 and x =-1

200

(x+10)² = 81

What is x = -19 and x = -1

300

(x+5)² = 64

What is x= -13 and x = 3

400

(x-11)² = 169

What is x = 24 and x=-2

500

(x+4)² = 225

What is x = 11 and x=-19

What is the solution to the system of equations?

100

x + y =3

y = x + 5

What is (-1,4)

200

x - 4y = -5

3x - 2y = 5

What is (3,2)

300

5x - y = 1

-2x+3y=10

What is (1,4)

400

6x + 3y = 1

y = -2X - 5

No solution

500

- 3x +2y = 6

y = 3x

What is (2,6)

Solve by Completing the Square (a=1)

100

x²-20x+87=-4

13, 7

200

x²-8x-2=-9

7, 1

300

x²+12x+18=-9

-3, -9

400

x²+6x-77=-5

6, -12

500

x²+4x-43=2

5, -9

Algebra 1B

100

3(4n-2) - 11n =3-6

n=3

200

Solve y+3=1 for y

y= -2

300

-2x+3+3x= 6+8

x=11

400

x-4=2x+1; -4

No

500

x-8=3x+2; -5

YES