what are the zeroes of the polynomial function f(x)=(x+4)(2x-1)(x-7)

Question

asnaseer · Answer

what this is asking for is: for what values of x is f(x) equal to zero.

now, if: $a\times b\times c=0$then either a=0 or b=0 or c=0

agreed?

anonymous · Answer

a=4,1/2,-7
b=-4,-1/2,7
c=4,-1/2,-7
d=-4,1/2/7
those are the options

asnaseer · Answer

I didn't ask you for the options

anonymous · Answer

well those are the options

asnaseer · Answer

if: $a\times b\times c=0$ then either a=0 or b=0 or c=0

do you agree with this?

anonymous · Answer

yes i agree but if u had to choose one of the options which would it be because thats the way the question was asked

asnaseer · Answer

ok, so now if we set f(x)=0 we get:$$(x+4)(2x-1)(x-7)=0$$so here we have three items, namely (x+4), (2x-1) and (x-7) that are being multiplied together to give zero.

so wat can you now deduce from this?