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Revision exercise on indices and logarithms:
1. Solve for x; #9^x + 3^(2x) -1 = 53#.
2. Find the value of x in the following equation:
#49^(x+1) + 7^(2x) =350#.
3. Use logarithms correct to 4 decimal places to evaluate;
#root 3((1.794 times 0.038)/(1.243))#