Question

Can somebody please answer the 1st question ASAP

Answer 1

The answer is 2

Explanation

we know, (a×b)1/3 = a1/3 × b1/3

so, here we can write

[(√50+√42)×(√50-√42)]^1/3

= [(√50)^2 - (√42)^2]^1/3

= [ 50 - 42 ] ^1/3

= (8)^1/3

we know, 8 = (2)^3 put the value,

= (2^3)^1/3

= (2)^3/3

= (2)^1

= 2