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уебан ты ♥♥♥♥
По этому я напишу квадратной уравнение, которое решается через дискременант
-5x²+7x-2=0
a=-5 b=7 c=-2
D=b²-4ac, D=7²-4*(-5)*(-2)=49-40=9>0
-b+-КореньD
х1,2 = ———————
2a
-7-корень9 -7-3
х1 = —————— = —— = 1
2*(-5) -10
-7+4 -4
х2=————— = —— = 0.4
-10 -10
Ответ:0.4, 1