quadratic formula
x = -b plus or minus the square root of (b^2 – 4ac) all divided by 2a. used for quadratic equations where you can’t factor. the equation is ax^2 + bx + c.
f-ck the quadratic equation i have a graphing calculator.
a handy formula easily memorized by repet-tion. it is used in many instances, such as trying to find the roots of an equation, or solving an equation that will not factor with integers.
to solve using the quadratic formula:
in any equation
ax^2+bx+c,
the roots can be found by subst-tuting into:
-b(+,-)sqrt(b^2-4ac)/2a
or
negative “b” plus or minus the square root of “b” squared minus 4(a)(c), all divided by 2(a).
to solve using the quadratic formula:
in any equation
ax^2+bx+c,
the roots can be found by subst-tuting into:
-b(+,-)sqrt(b^2-4ac)/2a
or
negative “b” plus or minus the square root of “b” squared minus 4(a)(c), all divided by 2(a).
ex:
hm..
10x^2+13x-5
-13(+,-)sqrt(169+200)/20
>_>
in other words, by subst-tuting the numbers in, you get 13(+,-)sqrt(369)/20.
as you may or may not have guessed, this gives you a very nasty number, which should be approximated and rounded to the nearest thousandth.
ex equals the opposite of b plus or minus the square root of b squared minus four ac all over two a (to the tune of the mulbary bush the monkey chases the weasle)
quadratic formula—>
x = -b(+/-)(squaroot of:)(b^2 – 4ac)
———————————-
2a
when the equation is
0=ax^2 + bx + c
the reason behind dropping out of chemistry. it causes ones brain to recoil in horror and claw at the inner skull wall…it proves that combining math and science is never a worthwhile endeaver…especially when you can just as easily become a biologist and cut up weird things for a living….much more enjoyable.
to h-ll with the quadratic formula
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