pt <=> x^4-6x^2-12x-6-8 = 0
<=> x^4-6x^2-12x-14 = 0
pt <=> x^4-6x^2-12x-6-8 = 0
<=> x^4-6x^2-12x-14 = 0
Cho P=\(\dfrac{x+1}{x}\)+\(\dfrac{4}{x+1}\)với x>0
Tim GTNN của P và khi x=bao nhiêu
B=[√x+y-√xy/√y+√x]:[x/√xy+y + y/√xy - x+y/√xy]
a,Rút gọnB
b,Tính giá trị cuả B khi x=3,y=4+2√3
Giup minh vơi cac ban nha
gpt 4x^2+x+1/(can2)=0\
giup tui voi
rut gon
N = √3 - 2√2 - √6 + 4√2 lèm hộ tui vơi
Giup meo vs: \(\sqrt{x+3-4\sqrt{x-1}}+\sqrt{8+x+6\sqrt{x-1}}=5\)
Giải phương trình:
a) \(\sqrt{x+3-4\sqrt{x+1}}+\sqrt{x+8-6\sqrt{x-1}}=1\)
b) \(\sqrt{x+\sqrt{x-11}}+\sqrt{x-\sqrt{x-11}}=4\)
c) \(\sqrt{x+2+3\sqrt{2x-5}}+\sqrt{x-2\sqrt{2x-5}}=2\sqrt{2}\)
d) \(\sqrt{x-4}+\sqrt{6-x}=x^2-10x+27\)
e) \(\sqrt{2x+1}+\sqrt{17-2x}=x^4-8x^3+17x^2-8x+22\)
f) \(\sqrt{3x^2+12x+16}+\sqrt{y^2-4y+13}=5\)
g) \(\sqrt{x+x^2}+\sqrt{x-x^2}=x+1\)
ai lmmm giúp tui ikkk
\(\left(5\right)\sqrt{x+3-4\sqrt{x-1}}\sqrt{x+8+6\sqrt{x-1}}=5\)
\(\left(6\right)2x^2+3x+\sqrt{2x^2+3x+9}=33\)
\(\left(7\right)\sqrt{3x^2+6x+12}+\sqrt{5x^4-10x^2+30}=8\)
\(\left(8\right)x+y+z+8=2\sqrt{x-1}+4\sqrt{y-2}+6\sqrt{z-3}\)
1) √(2x-1) <= 8-2x
2) √[(x+1)(4-x)] > x-2
3) √(x-2x^2+1) > 1-x
4) √(x+5) - √(x+4) > √(x+3)
5) √(5x-1) - √(x-1) > √(2x-4)
6) √(x+3) >= √(2x-8) + √(7-x)
7) √(x+2) - √(3-x) < √(5-2x)
8) √(x+1) > 3 - √(x+4)
9) √(5x-1) - √(4x-1)<= 3√x
10) { {√[2(x^2-16)]} / √(x-3) }+ √(x-3) > (7-x) / √(x-3)
Giúp mình 10 câu này với ạaa
(\(\frac{x-2\sqrt{x}-1}{x-4}\) - 1 ) / (\(\frac{4-x}{x-\sqrt{x}-6}\) - \(\frac{\sqrt{x}-2}{3-\sqrt{x}}\)- \(\frac{\sqrt{x}-3}{\sqrt{x}+2}\) )
Cac ban oi giup mk nha