Show that 4-3root3 is an irrational number
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Answer:
Step-by-step explanation:
Let us assume that 4 - 3√3 is rational.
∴ 4 - 3√3 = a/b where a and b are co prime
4 - a/b = 3√3
4b -a/b = 3√3
4b - a/ 3b =√3
Now,
4b - a/ 3b is a rational number.
∴√3 is also rational.
This contradicts that √3 is irrational.
This was due our wrong assumption.
∴ 4 - 3√3 is an irrational number.
Hence Proved
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