" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
x2 +4 =x2 to x2 to znaczy do potegi
x2-x2=-4
0=-4
b) (2-3x)² - (1+2x)² - 3x² = 2x²
4+9x2- 2+4x2-3x2=2x2
8x2=-4+2
8x2=-2