SOLUTION: 11. a(rs)8- 3(rs)2a^2

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Question 59937: 11. a(rs)8- 3(rs)2a^2
Found 2 solutions by funmath, chitra:
Answer by funmath(2933) About Me  (Show Source):
You can put this solution on YOUR website!
If rs means radical sign or square root, this is what you do:
11. a%2Asqrt%288%29-3%2Asqrt%282a%5E2%29
a%2Asqrt%284%29%2Asqrt%282%29-3%2Asqrt%28a%5E2%29%2Asqrt%282%29
2a%2Asqrt%282%29-3%2Aa%2Asqrt%282%29
%282-3%29%2Aa%2Asqrt%282%29
-1a%2Asqrt%282%29
-a%2Asqrt%282%29
Happy Calculating!!!

Answer by chitra(359) About Me  (Show Source):
You can put this solution on YOUR website!
The given expression is:

a. rs(8) - 3 rs(2a^2)

This can be written as:

a. rs(4 * 2) - 3 rs(2) . rs(a^2)

a . rs(4) . rs(2) - 3 rs(2). a

a . 2 . rs(2) - 3a rs(2)

2a rs(2) - 3a rs(2)

Taking a rs(2) as a common factor (or subtracting,since they are like terms) we get:

a rs(2) [ 2 - 3]

==> - a rs(2)

Hence, the solution.