Question 188260
Solve by Factorization 
1. x2 - 13x + 30 = 0 
This one is easy, you do it.
2. 2x2 - 3x = 2
2x^2 - 3x - 2 = 0
(2x + 1)*(x - 2) - 0
x = 2, x = -1/2
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3. 3x2 - 7x - 6 = 0 
4. 5x2 - 40 x = 0 
5. 36x2 - 81 = 0 Divide by 9
x^2 - 9 = 0
A difference of 2 squares is ALWAYS the product of the sum and difference of the roots.
sum = x + 3
difference = x - 3
(x+3)*(x-3)= 0
x = +3, x = -3
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6. 4x2 - 16 = 0 Divide by 4
7. 3x2 = 4x + 7 
8. x2 + 2x = 0 
9. 5x2 - 40 x = 0 
10. x2 + x = 0 
Solve By Quadratic Formula 
1. 2x2 - 6x + 3 = 0 
2. 7x2 + 4x = 1 
3. 2x2 + 6x + 3 = 0 
4. x2 - 5x + 6 = 0 
*[invoke solve_quadratic_equation 1,-5,6]

5. 3x2 = 4x + 5
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