Question

(15у-24)(3у-0,9) =0 найти корни уравнения

Answer 1

45y(2)-13.5y-72y+21.6=0

45y(2)-85.5+21.6=0

D=3422.25

y=85.5+58.590=3.3

y2=85.5-58.590=3

 

Answer 2

(15y-24)(3y-0,9)=0

45y квадрат - 13.5y-72y+21.6=0

45y квадрат-85.5y+21=0

D=2025+7182=9207

^D=95,96

x1,2=85,5+-95,96       x1=2,1 x2=-0,12

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