Question

The value of x (2x2

- 5x + 6) at x = 1 is _______________ ( )
a) 5 b) 6 c) 3 d) -2​

Answer 1

$hence \: x = 1 \\ ∴x(2 \times 2 - 5x + 6) \\ = 1(2 \times 2 - 5 \times 1 + 6) \\ = 1(4 - 5 + 6) \\ = 1( - 1 + 6) \\ = 1(5) \\ = 1 \times 5 \\ = 5 \\ ∴the \: answer \: is \: 5$