oblicz delte
1) 4x2+12x=0
2) 9x2-1=0
3) 5x2+12=0
1) 4x²+12x=0
a=4 b=12 c=0
Δ=b²-4ac = 144-0=144
2) 9x²-1=0
a=9 b=0 c=-1
Δ=0-4*9*(-1) = 36
3) 5x²+12=0
a=5 b=0 c=12
Δ=0-240=-240
ax^2+bx+c=0
delta=b^2-4ac
4x^2+12x=0
delta=12^2=144
9x^2-1=0
delta=36
5x^2+12=0
delta=-4*5*12=-240
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1) 4x²+12x=0
a=4 b=12 c=0
Δ=b²-4ac = 144-0=144
2) 9x²-1=0
a=9 b=0 c=-1
Δ=0-4*9*(-1) = 36
3) 5x²+12=0
a=5 b=0 c=12
Δ=0-240=-240
ax^2+bx+c=0
delta=b^2-4ac
4x^2+12x=0
delta=12^2=144
9x^2-1=0
delta=36
5x^2+12=0
delta=-4*5*12=-240