SOLUTION: Hi,I desperately need help with the following questions:
1. Square root n^2 + 12n + 36
2.Simplify the rational expression:
x2 – 3x – 10
___________ _
x2 – x – 20
3.
Algebra.Com
Question 196047: Hi,I desperately need help with the following questions:
1. Square root n^2 + 12n + 36
2.Simplify the rational expression:
x2 – 3x – 10
_____________
x2 – x – 20
3. Divide:
2x2 + 5x – 12 ÷ 2x2 – 7x + 6
______________ ________________
9x2 – 16 3x2 – x – 4
4. . Simplify:
√[144x^10y^12z^18]
5. Perform the indicated operations:
√[50] + 2√[32] – √[8]
6. Multiply:
(5√[2] + 2√[3])(√[2] – 2√[3])
7. Rationalize the denominator:
2____
√[6] – √[5]
Thanks a bunch
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
I'll do the first three to get you started
# 1
# 2
Start with the given expression.
Factor to get .
Factor to get .
Highlight the common terms.
Cancel out the common terms.
Simplify.
So simplifies to .
In other words, where or
# 3
Start with the given expression.
Multiply the first fraction by the reciprocal of the second fraction .
Factor to get .
Factor to get .
Factor to get .
Factor to get .
Combine the fractions.
Highlight the common terms.
Cancel out the common terms.
Simplify.
FOIL.
So simplifies to .
In other words, where , , , or
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