1. Mathayom 3 Test

2. Radical Equation Solve for the value of the unknown. 9𝑥+4 − 𝑥+9 =3
9𝑥+4 − 𝑥+9 =3
𝑥 −15 + 𝑥 =3
7𝑥+4 =7
3𝑥 2 +10𝑥 −5=0
3𝑥 −5 + 𝑥 −1 =2

3. Factoring by Difference of Two Squares
27 − 𝑥 −2 2
(5𝑥 −1) 2 −48
25 9 𝑥 2 −32
27𝑥 2 −48𝑥
2𝑥 2 𝑦 − 32𝑦 3

4. Two circles, A and B, have areas 243∏ and 192 ∏ 𝑚 2 respectively
Two circles, A and B, have areas 243∏ and 192 ∏ 𝑚 2 respectively. What is the difference between the radii of these two circles?
Let ∆HIJ be a right triangle with equilateral legs. If its hypotenuse is 𝑖𝑛, find the measures of its legs.
Find the perimeter of a square if its diagonal is
The average profit of a company (in millions per month) from 2001 to 2008 can be modeled by the equation 𝑦= 𝑥+1.05 , where x is the number of years since In what year will the profit of the company by 12 million?