ax^2 + bx + c = 0
Solve for x.
Obviously, x is equal to the quadratic formula. Can you derive it? Hint: the most important technique is completing the square.
The quadratic formula is fundamental for even the most basic algebra, and it only takes five or ten steps to derive. I think it should be on any high school algebra final exam.
1 comment:
ax^2 + bx + c = 0
(x,f(x))
f(x)=y=0
x=0
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