Lets BC =x
8/5 = 32/x
8x =32 * 5
8x = 160
x = 160/8
x = 20
answer
BC = 20
Answer:
the very first one 8.62<8.623
By the polynomial remainder theorem, the remainder upon dividing
![p(x)](https://tex.z-dn.net/?f=p%28x%29)
by
![x-3](https://tex.z-dn.net/?f=x-3)
will be the value of
![p(3)](https://tex.z-dn.net/?f=p%283%29)
.
... | 1 ... -6 ... -4 ... -6 .... -2
3. | .. ... 3 ... -9 ... -39 .. -135
--------------------------------------
... | 1 ... -3 ... -13 . -45 .. -137
So you have
![\dfrac{x^4-6x^3-4x^2-6x-2}{x-3}=x^3-3x^2-13x-45-\dfrac{137}{x-3}](https://tex.z-dn.net/?f=%5Cdfrac%7Bx%5E4-6x%5E3-4x%5E2-6x-2%7D%7Bx-3%7D%3Dx%5E3-3x%5E2-13x-45-%5Cdfrac%7B137%7D%7Bx-3%7D)
which means
![p(3)=-137](https://tex.z-dn.net/?f=p%283%29%3D-137)
.
Answer:
Step-by-step explanation:
(x-2)(x+4)=x^2+4x-2x-8=0=> x =2, x=0
Answer:
18
Step-by-step explanation:
replace x with -3 in the given function :
f(x) = x2 - 2x + 3 ➡ f(-3) = (-3)^2 - 2×(-3) +3 ➡ 9 + 6 + 3 = 18