Rozwiąż równania i nierówności.
C ) pierwiastek z (x^2-6x+9) = 3
H) |2x+6|<=1
I) pierwiastek z (x^2+4x+4)<=4
c)
√(x²-6x+9) = 3
x²-6x+9 = 9
x²-6x=0
x(x-6)=0
x=0 v x=6
====================
h)
|2x+6|≤ 1
2x+6 ≤ 1 v 2x+6 ≥ -1
2x ≤ -5 2x ≥ -7
x≤-5/2 x ≥ -7/2
---
xe<-7/2;-5/2>
=====================
I)
√(x²+4x+4) ≤ 4
x²+4x+4 ≤ 16
x²+4x-12 ≤ 0
Δ=16+48=64
√Δ=8
x1=(-4+8)/2=2
x2=(-4-8)/2=-6
xe<-6;2>
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
c)
√(x²-6x+9) = 3
x²-6x+9 = 9
x²-6x=0
x(x-6)=0
x=0 v x=6
====================
h)
|2x+6|≤ 1
2x+6 ≤ 1 v 2x+6 ≥ -1
2x ≤ -5 2x ≥ -7
x≤-5/2 x ≥ -7/2
---
xe<-7/2;-5/2>
=====================
I)
√(x²+4x+4) ≤ 4
x²+4x+4 ≤ 16
x²+4x-12 ≤ 0
Δ=16+48=64
√Δ=8
x1=(-4+8)/2=2
x2=(-4-8)/2=-6
xe<-6;2>