Solving Polynomials (PLZ HELP!! BRAINLIEST IF RIGHT)

Step-by-step explanation:

x = , x = ± i

Step-by-step explanation:

Given

5x³ - 2x² + 5x - 2 = 0 ( factor the first/second and third/fourth terms )

x²(5x - 2) + 1(5x - 2) = 0 ← factor out (x - 2) from each term

(5x - 2)(x² + 1) = 0

Equate each factor to zero and solve for x

5x - 2 = 0 ⇒ 5x = 2 ⇒ x =

x² + 1 = 0 ⇒ x² = - 1 ⇒ x = ± = ± i

The polynomial is of degree 3 and has 3 roots, 1 real and 2 complex, that is

x = ← real root

x = ± i ← complex roots

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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