Question

for root 2 x square - 5 x + root 2 is equals to x+root 2

find the value of the discriminant

Answer 1

Step-by-step explanation:

$d = b {}^{2} - 4ac$

$d = ( - 5) {}^{2} - 4 \times 2 \times \sqrt{2}$

$d = 25 - 8 \sqrt{2}$