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(b plus/minus square root of b² minus 4ac all over 2a)

sana makatulong :)
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An example of a Quadratic Equation: 5x to the second power- 3x+3=0. The name Quadratic comes from "quad" meaning square, because the variable gets squared (like x2).It is also called an "Equation of Degree 2" (because of the "2" on the x)The Standard Form of a Quadratic Equation looks like this:ax to the second power+bx+c=0
a, b and c are known values. a can't be 0."x" is the variable or unknown (you don't know it yet).Here are some more examples: In this one a=2, b=5 and c=3    This one is a little more tricky:Where is a? In fact a=1, as we don't usually write "1x2"b = -3And where is c? Well, c=0, so is not shown. Oops! This one is not a quadratic equation, because it is missing x2 (in other words a=0, and that means it can't be quadratic)

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