Daily review

Make the x subject of the formula

100

 ^{1/8(63x-16)=0}

 X=1/4

200

2ax+c= 2a

 x=2a-c/2a

300

3xy=4m

4m/3y=x

400

2x=1n/5

X=n/10

500

y=k/x

x=k/y

Rational expressions

100

x²-5x/(x+3)(x-5)

x/x+3

200

x²-x/x²-1

x/x+1

300

3/w-1  -    2/w+3

w+11/w²+2w-3

400

x³-x²-42x/2x²-20x+42

x(x+6)/ 2(x-3)

500

v-5/ v²-10v+25

1/v-5

Linear equations with 2 variables

100

y=-3x+5

5x-4y=-3

x=1

y=2

200

-2x-y=-9

5x-2y=18

x=4

y=1

300

-2x-9y=-25

-4x-9y=-23

x=-1

y=-3

400

8x+14y=4

-6x-7y=-10

x=4

y=2

500

-4x-2y=14

-10x+7y=-25

y=-5

x=-1

Solve quadratic equations

100

x²+y²=20

x+y=6

X=2

x=4

Y=2

y=4

200

What is the quadratic formula?

On the board

300

Standard form of quadratic formula 

ax²+bx+c=0

400

9+7x=7x²

x= -0.738, 1.738

500

10-9x²+4x=-6x²

x= -1.276,    2.61