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shukovzaur0
@shukovzaur0
December 2021
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Буду рад помогите!!!!!!!!!
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1nferm1ere
4 на скрине.
5.
(-4x - 3)*(3x+0,6) = 0
-12x^2 - 2,4x - 9x - 1,8 = 0
-12x^2 -11,4x - 1,8 = 0 |:3
-4x^2 - 3,8x - 0,6 = 0 | :2
-2x^2 - 1,9x - 0,3 = 0
2x^2 + 1,9x + 0,3 = 0
D= b^2 - 4*a*c= 3,61 - 4* 2*0,3 = 1,21
X1,2= (-b+-
√D)/2*a = (- 1,9+-1,1)/4
X1 = 0,75;X2 = -0,2
Ответ:X1 = 0,75;X2 = -0,2.
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Answers & Comments
5.
(-4x - 3)*(3x+0,6) = 0
-12x^2 - 2,4x - 9x - 1,8 = 0
-12x^2 -11,4x - 1,8 = 0 |:3
-4x^2 - 3,8x - 0,6 = 0 | :2
-2x^2 - 1,9x - 0,3 = 0
2x^2 + 1,9x + 0,3 = 0
D= b^2 - 4*a*c= 3,61 - 4* 2*0,3 = 1,21
X1,2= (-b+-√D)/2*a = (- 1,9+-1,1)/4
X1 = 0,75;X2 = -0,2
Ответ:X1 = 0,75;X2 = -0,2.