Question

Find the value of polynomial x2 – 3x + 6 at x = under root2.

Answer 1

X^2-3x+6
2-3root2+6
8-3root2

Answer 2

=> x2-3x+6........{x=√2}
=>(√2)2-3(√2)+6
=>2-3√2+6
=>8-3√2.
hope it helps!!!