I don't mean ax^{2}+ bx + c
I mean the other formula with the square root. Btw i don't know how to type the formula here, but I assume you know which formula I'm talking about
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I don't mean ax^{2}+ bx + c
I mean the other formula with the square root. Btw i don't know how to type the formula here, but I assume you know which formula I'm talking about
You are not asking a question. Are you trying to find p(5). If so, then you do not need to use the quadratic equation. If you want to find the y-intercept then you let x=0 and do not use the quadratic formula. If you want to know what happens to p(x) when x is very large you do not use the quadratic formula.
In fact you never have to use the quadratic formula.
Also most people would only think about using the quadratic formula when the function is quadratic not cubic.
You seem to have the idea that given a particular function that there is just one thing to do to it so there is no need to ask a question because the question is obvious. Move away from that thinking.
Good luck.
x^4 + 4x^2 = 0
x^2(x^2 + 4) = 0
so:
x^2 = 0 or x^2 + 4 = 0
I think you mean "the quadratic formula". You can use the quadratic formula for any quadratic equation to find the solutions. The solutions are the x-coordinates of the intersection of the curve with the x-axis. When the curve does not cross the x-axis you get a minus sign inside the square root and you cannot take a minus sign of a square.