(5х+1.6)(3х-11)=0 как можно быстрее ​

(5х+1,6)(3х-11)=0

15x²-50,2x-17,6=0

D = -50,2²-4·15·(-17,6) = 2520,04+1056 = 3576,04 = 59,8²

(5х+1,6)(3х-11)=0

15x²-50,2x-17,6=0

D = -50,2²-4·15·(-17,6) = 2520,04+1056 = 3576,04 = 59,8²

x_{1} = \frac{50,2+59,8}{2*15} = \frac{110}{15} = \frac{22}{3}x

1

=

2∗15

50,2+59,8

=

15

110

=

3

22

x_{2} = \frac{50,2-59,8}{2*15} = \frac{-9,6}{15} = -0,64x

2

=

2∗15

50,2−59,8

=

15

−9,6

=−0,64