Identify the equation of the function from its graph. A) ƒ(x) = x3 – 3x2 – x + 3

B) ƒ(x) = x3 – 3x2 – 2x + 6

C) ƒ(x) = –2x3 – 6x2 – 2x + 6

D) ƒ(x) = 2x3 – 6x2 – 2x + 6

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

5

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55

a. positive: 2 or 0; negative : 2 or 0; complex: 4or2or0