Question

3root2-5root find rational number​

Answer 1

3√2 - 5√6

= √3√3√2 - 5√3√2

= √3√2(√3 - 5)

= √6(√3 - 5)

= √6(1.732 - 5)

= √3√2(1.732 - 5)

= 1.732*1.414(1.732 - 5)

= 2.449(1.732 - 5)

= 2.449(-3.268)

= -8.003

= -8 (approx.)