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Question

Find all other zeroes of the polynomial p(x)=2x3+3x211x6. if one of its zero is 3. Solve the equation by graphically method:-

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Solution

Given ,

x=3 is zero of given polynomial

x+3=0

Now ,

p(x)x+3=2x23x2x3

2x3+3x11x6x3=2x23x2

2x24x+x2=0

2x(x2)+1(x2)=0

(2x+1)(x2)=0

When ,

2x+1=0

x=12

When,

x2=0

x=2

Hence others two zeroes are 2,12 .


1006505_1061071_ans_e4f56ad0edf441fcb6c40adc29106f7a.jpg

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