" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
2x²+9= x²-6x+9-(x² + 6x +9)
2x²+9=x²-6x+9-x²-6x-9
2x²-x²+6x+x²+6x=9-9-9
2x²+12x=-9
2x²+12x+9=0
Δ=b²-4ac
Δ=12²-4(2*9)
Δ=√72
x₁= -b-√Δ podzielic na 2a x₂= -b+√Δ przez 2a
x₁=-12-√72 przez 4 x₂= -12+√72 przez 4