
Re: Please help refresh my Algebra skills (factoring & solving)
Posted:
Oct 17, 1999 4:33 PM


>If I have some nasty numbers in quadratic form, how do I factor and solve >for the TWO answers??
>4.9x^2+5.5x105=0 >That factors to x(4.9x+5.5) = 105
>What next??
You can "complete the square", by finding out what binomial squared gives 4.9x^2 + 5.5x + A, where A isn't known.
Then, write the expression as this binomial squared, + A  A. Play with this, and you find that the general solution to
ax^2 + bx + c = 0
is given by
b +/ (b^2  4ac)^(1/2) x =  2a
 Physics Boy
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