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a) x(x-3)=(x+2)do potegi 2
b) -x do potegi2 + 2x +24 =0
a)x^2-3x-x^2-4x-4=0
-7x=4
x=-4/7
b) delta = 4+96 = 100
pierwiastek z delty = 10
x=-4 lub x=6
a ) x(x-3)=(x+2)do potegi 2
x^2-3x=x^2+4x+4
-7x=4 //(-7)
x= -4/7
delta=4+96=100
x1 = -2-10/-2 = 6
x2= -2+10/-2= -4
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a)x^2-3x-x^2-4x-4=0
-7x=4
x=-4/7
b) delta = 4+96 = 100
pierwiastek z delty = 10
x=-4 lub x=6
a ) x(x-3)=(x+2)do potegi 2
x^2-3x=x^2+4x+4
-7x=4 //(-7)
x= -4/7
b) -x do potegi2 + 2x +24 =0
delta=4+96=100
x1 = -2-10/-2 = 6
x2= -2+10/-2= -4