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2
18x²-3x(x-5)+35=5(x+7)
18x²-3x²+15x+35=5x+35
15x²+15x-5x=35-35
15x²+10x=0
3x²+2x=0
x(3x+2)=0 x=0 3x+2=0 3x=-2 x=-2/3
x´=0 e x"=-2/3
0u a=3 b=2 c=0
-b+-√b²-4*a.c
-----------------
2*a
-b+-√b²-4*3*0 -2+-√4-0 -2+2
------------------ ----------- ------ => 0/6=0 x'=0 -2-2
2*a 2.3 6 ------ = -4/6= -2/3 x"=-2/3
6
18x²-3x²+15x+35=5x+35
15x²+15x-5x=35-35
15x²+10x=0
3x²+2x=0
x(3x+2)=0 x=0 3x+2=0 3x=-2 x=-2/3
x´=0 e x"=-2/3
0u a=3 b=2 c=0
-b+-√b²-4*a.c
-----------------
2*a
-b+-√b²-4*3*0 -2+-√4-0 -2+2
------------------ ----------- ------ => 0/6=0 x'=0 -2-2
2*a 2.3 6 ------ = -4/6= -2/3 x"=-2/3
6
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