A) \[13(a+b)\]
B) \[14(a-b)\]
C) \[12(a+b)\]
D) \[5(y+x)\]
E) None of these
Correct Answer: C
Solution :
\[8\left( a+b \right):x::x:18\left( a+b \right)\] \[\Rightarrow {{x}^{2}}=144{{(a+b)}^{2}}\Rightarrow x=12(a+b)\]
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