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√3 x - 6 < 9 - 2√3 x
√3x + 2√3x < 9 +6
3√3x < 15
x < 15/3√3
x < 15√3/9
x < 5√3/3
b)
√2 +4 < √8x - 8
√2 + 4 < 2√2x - 8
2√2x > √2 + 4 + 8
2√2x > √2 + 12
x > (√2 + 12)/2√2
x > √2(√2 + 12)/4
x > (2 + 12√2)/4
x > 2(1 + 6√2)/2
x > 1 + 6√2