Answer:

10

Step-by-step explanation:

ano po need mo lng i find yung discriminant jan so ang formula po jan is b²-4ac

so first hanapin natin yung value ni a,b and c

so ang value ni a is 1, b is -2 and c is -2

b²-4ac

(-2)²-4(1)(-2)

4+6

10 po answer

sana po mkatulong