" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
(x+3)²=(x-1)(x-7)
wzor skroconego mnozenia: (a+b)^2=a^2+2ab+b^2
x²+6x+9=x²-7x-x+7
6x+8x=7-9
14x=-2
x=-1/7