If you would like to factor completely 3 * x^2 - x - 4, you can do this using the following steps:
<span>3 * x^2 - x - 4 = (3 * x - 4) * (x + 1) = (3x - 4) * (x + 1)
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The correct result would be (3x - 4) * (x + 1<span>).</span>
The reciprocal of a number x is 1/x.
Let x = 1000
The reciprocal is 1/1000.
To see how they are related, let us solve the two equations.
FIRST EQUATION



SECOND EQUATION



Hence the solutions to the two equations are ADDITIVE INVERSE of each other.