No because if it is a square all the sides are 7m long so a 9m plank will not fit. Hope this helps.
Answer:
109n + 35
Step-by-step explanation:
I'm not sure what you are asking because you have no question in there
Volume of a prism is V=Bh
Step-by-step explanation:
Putting value of w
(8)2 - 4(8) - 2
64 - 32 - 2
32 - 2
30
Answer:
x^3+5x^2+16x+80
Step-by-step explanation:
You know that you can write your polynom this way : (x-r1)(x-r2)(x-r3) with r1,r2 and r3 the roots so you get :
(x+5)(x+4i)(x-4i)
Simplify (x+4i)(x-4i) with the formula (a-b)(a+b)=a²-b²
so you have (x^2+16)=(x+4i)(x-4i)
Your polynom looks like this :
(x^2+16)(x+5) just expand it
and you get x^3+5x^2+16x+80