How do i break up (x^2 -4x+8) into like (x blabla)(x blabla)

You can't break it in the form of (x blabla)(x blabla) since there are no real roots.

Step-by-step explanation:

Proof:

x^2 - 4x + 8 = 0

(x - 2)^2 = - 4

x=2 + 2i or x= 2 - 2i (Complex numbers)

8

step-by-step explanation:

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

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