Roots of equation of the form ax2 + bx + c
Formula is (-b +/- (sqrt (b2 - 4ac)))/2a
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quadratic formula is used often
A quadratic equation can have either two real solutions or no real solutions.
There are an infinite number of different quadratic equations. The quadratic formula is a single formula that can be used to find the pair of solutions to every quadratic equation.
2x2-10+7 = 0 Solving the quadratic equation using the quadratic formula will give you two solutions and they are: x = (5 - the square root of 11)/2 or x = (5 + the square root of 11)/2
Well, if the given quadratic equation cannot be factored, nor completed by the square, try using the quadratic formula.