Question

Check whether (x+1) is a factor of
3x³+5x²-2x-4​

Answer 1

the question is incomplete it needs an equal sign

Step-by-step explanation:

if the question is 3x^3 +5 x^2 -2x -4 = 0

check whether x+1 is a factor

Answer :

p(-1) = 3(-1)^3 + 5(-1)^2-2(-1)-4

= -3+5+2-4

= 7-7

=0

so x+1 is a factor

Answer 2

Answer:

Answer

To check that x−2 is the factor of x

3

−2x

2

−5x+4:

The value of x−2=0 ⟹ x=2.

So, put x=2 in expression, we get,

f(x)=x

3

−2x

2

−5x+4

f(2)=(2)

3

−2(2)

2

−5(2)+4

⇒f(2)=8−2×4−5×2+4

⇒f(2)=8−8−10+4

⇒f(2)=−6.

Remainder is not 0, when x−2 divides the polynomial x

3

−2x

2

−5x+4.

Thus x−2 is not a factor of polynomial x

3

−2x

2

−5x+4.