PILNE !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Mam takie rownania i z kazdego mam wypisac a, b i c a nastepnie obliczyc delte delta= b2-4ac a)x2-5x-14=0 b)-x2-2x+15=0 c)-4x2+2x-5=0 d)x2+10=7x e)1+x+5x=0

a)x²-5x-14=0 a=1 b=-5 c=-14 Δ=b²-4ac Δ=(-5)²-4×1×(-14)=25+56=81 Δ>0 b)-x²-2x+15=0 a=-1 b=-2 c=15 Δ=b²-4ac Δ=(-2)²-4×(-1)×15=4-=4+60=64 Δ>0 c)-4x²+2x-5=0 a=-4 b=2 c=-5 Δ=b²-4ac Δ=(2)²-4×(-4)×(-5)=4-80=76 Δ<0 d)x²+10=7x x²-7x+10=0 a=1 b=-7 c=10 Δ=b²-4ac Δ=(-7)²-4×(1)×(10)=49-40=9 Δ>0 e)1+x+5x=0 6x+1=0 a=0 b=6 c=1 Δ=b²-4ac Δ=(6)²-4×(0)×(1)=36 Δ>0

a)x2-5x-14=0 a=1,b=-5,c=-14 delta=25+56=81 b)-x2-2x+15=0 a=-1,b=-2, c=15 delta = 64 c)-4x2+2x-5=0 a= -4,b=2,c=-5 delta = -76 d)x2+10=7x x²-7x+10=0 a=1, b= -7,c=10 delta = 9 e)1+x+5x=0 Czy to ostatnie to dobrze przepisane? 6x+1=0 a=0, b=6, c=1 delta = 36