Question

4x2-5x+3,when x is 1/2

Answer 1

$4 \times 2 - 5x + 3$
$8 - 5 \times \frac{1}{2} + 3$
$8 - \frac{5}{2} + 3$
$8 - \frac{5 + 6}{2}$
$8 - \frac{11}{2}$
$\frac{16 - 11}{2}$
$\frac{5}{2}$