Question

Q3. Find the zeroes of: 3x3 – 5x2 – 11x – 3.​

Answer 1

Step-by-step explanation:

3x³ – 5x² – 11x – 3

3x³ – 5x² –8x –3x – 3

3x³ +3x²– 8x² –8x –3x – 3

3x²(x+1)-8x(x+1)-3(x+1)

(x+1)(3x²-8x-3)

(x+1)(3x²-9x+x-3)

(x+1){3x(x-3)+1(x-3)}

(x+1)(3x+1)(x-3)

x+1=0. 3x+1=0. x-3=0

x= -1 x= -1/3. =3

hence zeros are -1,-1/3 and 3

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