" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
y=1+√2
x-y/x+y=√3-1-(1+√2)/√3-1+1+√2=√3-2-√2/√3+√2*√3-√2/√3-√2=3-√6-2√3+2√2+√6+2/3-2=-2√3+2√2+5
B)x=3-√2
3-x/x-3=3-3+√2/3-√2-3=√2/-√2=-1
C)x³-27/x²+3x+9=5
(x-3)(x²+3x+9)/(x²+3x+9)=5
x-3=5
x=8
x+1=8+1=9
D)(x²-4)²/(x-2)²=(x-2)²(x+2)²/(x-2)²=(x+2)²=x²+4x+4
E)x≠1
x/x+1 -1= x/x+1 - x+1/x+1= x-x-1/x+1=-1/x+1
F)x+ 1/x= x²/x +1/x= x²/x=x
G)1/n - (n+2)=1/n - (n+2)n/n = 1-n²-2n/n=-n²-2n+1/n=(n-1)²/n