" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
x^2+15x-27x-405=2015-x
x^2-11x-2420=0
delta=121+9680=9801
pierw z delty=99
x1=(11-99)/2=-44
x2=(11+99)/2=55
x²+15x-27x-405=2015-x
x²+15x-27x+x=2015+405
x²-11x=2420
x²-11x-2420=0
a=1, b=-11, c=-2420
Δ=b²-4ac
Δ=(-11)²-4*1*(-2420)
Δ=121+9680
Δ=9801
√Δ=99
Δ>0