Which of the following is not a zero of f(x) = (x2 - 4x + 4) (x2 + 3x - 10) = 0

**Answer:**

x2-4x+4x=0

(x-2)^2=0

x=2,2 is zeros and

x2+3x-10=0

x2-2x+5x-10=0

x(x-2)+5(x-2)=0

(x-2)(x+5)=0

x=2,-5 are zeros

Hence,total zeros of given equation are 2,2,2,-5 and rest of following are not zero