Question

if a and b are zero of the polynomial 6x²+ X - 12 then find the value of a+b+ab​

Answer 1

Answer:

6x^× +x—2 =0

a and b are zeroes of QUADRATIC EQUATION

6x^2 +4x--3x -2 =0 ( 6× -2 =--12 4×--3= --12 +4--3 =1)

2x(3x +2 ) -- 1(3x+2) =0

(2x-1 ) (3x+-2) =0

2x=1. x=1/2

3x=--2

x= --2/3

a = --2/3. b. . =1/2

Find the value of a/b +b/a

a/b = -- 4/3 b/ a = --3/4

a/b+b/a = -- 4/3 -- 3/4 = (—16 --9) /12 = --25 /12

The required value is --25/12

Step-by-step explanation:

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Answer 2

Solution

refer to the attachment