Question

show that (x-2) is a factor of 3x square +x square -20 x + 12​

Answer 1

Answer:

12,so it is not the factor of this number

Step-by-step explanation:

firstly we have to find zero of the polynomial

so,x-2=0

x=2

so here,p(x)=3x^2+x^2-20x+12

p(2)=3*2^2+2^2-20*2+12

=6^2+4-40+12

=36+4-40+12

=52-40

=12

Here the answer is 12 except of 0.

Answer 2

Answer:

Given p(x)=x

3

+2x

2

+3x+6 and g(x)=x+2

Then g(x)=0 so x=−2 replace x by −2 we get

p(−2)=(−2)

3

+2(−2)

2

+3(−2)+6

p(−2)=−8+8−6+6

p(−2)=0

So remainder is zero then x+2 is factor of x

3

+2x

2

+3x+6