Apolynomial function can be written as (x + 1)(x + 4)(x - 7). what are the x-intercepts of the graph of this function ?

The x-intercepts of this graph are -1, -4 and 7.

To find the x intercepts of a fully factored function like the one above, you simply have to set each parenthesis equal to 0 and solve for x. This will give you all of the x intercepts.

FIRST ONE

x + 1 = 0 > subtract 1

x = -1

SECOND ONE

x + 4 = 0 > subtact 4

x = -4

THIRD ONE

x - 7 = 0 > add 7

x = 7

Now you have all of your x intercepts.

D is the answer

x+1=0

Isolate x and you get -1

Next x+4=0

isolate x you get -4

Finally

x-7=0

isolate x and you get 7

repeat the question

step-by-step explanation:

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm