HELP PLS ASAP

Rewrite f(x)=3x^4 - 9x^2 - 12 in factored form if f(2) = 0

Step-by-step explanation:

3x^4 - 9x^2 - 12 = 0

x^4 - 3x^2 - 4 = 0

x^2 = [3 ± √(3^2-4(1)(-4))]/[2(1)] = [3 ± 5]/2 = 4,-1

f(x) = 3(x^2-4)(x^2+1) = 3(x+2)(x-2)(x^2+1)

b.an increase in a causes b to decrease

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

happy to

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