Which number is a zero of the function $f(x)=x^2-x-6$ ?

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Answer 1 · 2016-02-14T10:32:20

Zeros of the function are $-2$ and $3$ .

To find zero of the function $f(x)=x^2−x−6$ , solve $x^2−x−6=0$ .

For this, $x^2−x−6=0$ can be written as $x^2−3x+2x−6=0$

or $x(x−3)+2(x−3)=0$ or $(x+2)(x-3)=0$

or $x= -2 or 3$

Hence, zeros of the function are $-2$ and $3$ .

Which number is a zero of the function f(x)=x^2-x-6f(x)=x^2-x-6?