\(\dfrac{x^5+x^4+1}{x^2+x+1}\)
\(=\dfrac{x^5+x^4+x^3-x^3+1}{x^2+x+1}\)
\(=x^3-x+1\)
\(\dfrac{x^5+x^4+1}{x^2+x+1}\)
\(=\dfrac{x^5+x^4+x^3-x^3+1}{x^2+x+1}\)
\(=x^3-x+1\)
x^5+x^4+1 phan x^2+x+1
phan tich da thuc thanh nhan tu
a)x4+x2+x+1
b)11x4+4x2-5
Phan tich da thuc sau thanh nhan tu : (x+1)(x+2)(x+3)(x+4)-8
phan tich da thuc thanh nhan tu
3(x4+x2+1)-(x2+x+1)2
CM phan thuc sau luon co nghia
x2-4/x2+4x-5
bai 1
a = (3x / 2x + 4 ) + (x +3 /x ^ 2 - 4 )
a . tim x de gia tri phan thuc a duoc xac dinh
b. rut gon a
c. tinh gia trin cua a khi x bang -3
d . tim gia tri cua x de phan thuc co gia tri bang 2
rut gon phan thuc:
1 \(\dfrac{x^2-18x-19}{x^2-1}\)
2 \(\dfrac{x\left(4x^2-8x+4\right)}{2x^3-2x^2}\)
cho da thuc fx biet fx chia x- 3 du 21, fx chia x+2 du -4, fx chia (x+2)(x-3) bang x^2+4 va con du . tinh phan tu tu do cua fx
phan tich thanh nhan tu \(x\sqrt{x}-3x+4\sqrt{x}-2\) voi x>0