Monday, October 13, 2014

Solving by a quadratic equation using the Quadratic Formula

Given a quadratic equation ax^2+bx+c=0 then x=(-b±√(b^2-4ac))/2a. This is the quadratic formula. Example 1 Solve the following equation using the quadratic formula; 3x^2+7x+2=0 solution. In our case a=3, b=7, and c=2. We next need to replace a, b,and c with 3, 7, and 2 respectively in the formula to get; x=(-7±√(7^2-4*3*2))/2*3. x=(-7±√(49-24))/6 = (-7±5)/6 = -2/6 or -12/6 =-1/3 or -2.


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