Question

Which of the following statements Is true concerning f(x)=x^2-2x-24?

Answer 1

Answer:

None of the given options is correct.

Step-by-step explanation:

Given:

$f(x)=x^2-2x-24$

To find:

the true statement

Solution:

$f(x)=x^2-2x-24$

Here,

$-2=-6+4$

$f(x)=x^2-6x+4x-24\\=x(x-6)+4(x-6)\\=(x+4)(x-6)$

To find the zeroes of $f(x)$, put $f(x)=(x+4)(x-6)=0$

$(x+4)(x-6)=0\\x+4=0\,,\,x-6=0\\x=-4,6$

So, zeroes are $-4$ and $6$

None of the given options is correct.