Q14 of 113 Page 61

If (a ‒ b), a and (a + b) are zeros of the polynomial 2x3 ‒ 6x2 + 5x – 7, write the value of a.

It is given in the question that, zero of the polynomial 2x3 – 6x2 + 5x - 7 is (a – b), a and (a + b)

Now by using the relationship between the zeros of the quadratic polynomial we have:


Sum of zeros =


a – b + a + a + b = (- (-6))/2


3a = 3


a = 1


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