To "rationalize the denominator" is another way to say, getting rid of that pesky radical at the bottom.
we'll simply start by multiplying top and bottom by the "conjugate" of the denominator, recall difference of squares, anyhow, let's do so
Answer:
x = -6
Step-by-step explanation:
2.4+3.06=5.46
5.46+.75=6.21
The answer is 6.21
Answer:
-7 / (x^2 +3x-10)
Step-by-step explanation:
1/ (x+5) - 1/(x-2)
we need to get a common denominator
1/ (x+5) * (x-2)/ (x-2) - 1/(x-2) * (x+5)/(x+5)
(x-2) / (x+5)(x-2) - (x+5)/ (x+5)(x-2)
Combine the numerator
(x-2 -x-5)/ (x+5)(x-2)
-7/(x+5)(x-2)
FOIL the denominator
-7 /( x^2 -2x +5x -10)
Combine terms in the denominator
-7 / (x^2 +3x-10)
Answer:
the mid point of the segment is (1,-5)