144-r^+135
-r^ +144 -135 =0
-r^ +9 =0
Δ=b^ -4ac
Δ= 0 -4·(-1)·9
Δ=36
√Δ= 6
x1= -b-√Δ/2a = 0- 6/-2=-6/-2=3
x2= -b+√Δ/2a= 0+6/-2= 6/-2 =-3
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144-r^+135
-r^ +144 -135 =0
-r^ +9 =0
Δ=b^ -4ac
Δ= 0 -4·(-1)·9
Δ=36
√Δ= 6
x1= -b-√Δ/2a = 0- 6/-2=-6/-2=3
x2= -b+√Δ/2a= 0+6/-2= 6/-2 =-3