SOLUTION: solve by quadratic formula: x squared = 4x + 12

Question 32709: solve by quadratic formula:
x squared = 4x + 12
Answer by mukhopadhyay(490) (Show Source): You can put this solution on YOUR website!
x^2 = 4x + 12
=> x^2-4x-12=0
Based on quadratic formula, the roots of ax^2+bx+c = 0 are
[-b+sqrt(b^2-4ac)]/2a and [-b-sqrt(b^2-4ac)]/2a;
Here a = 1, b=-4, and c=-12
The roots are: [4+sqrt(16+48)]/2 and [4-sqrt(16+48)]/2;
=> The roots are 6 and -2;

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