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Maths Puzzle
Numerical Ability
log (x+21) + log x = 2
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book Other Question
Please help me with this problem on page 402...Thank you very much.
1/5x+3/5y=12/5
-1/5x+3/5y=6/5
Simplify the radical. Assume that all variables represent positive real numbers.
√6a +5√150a -4√216a
A) 2√372a
B) 1√372a
C) 2√6a
D) 1√6a