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doka1312
@doka1312
August 2022
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найдите корни ehfdytybq x 2( в квадрате)+ 2х- 15=0
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ShirokovP
Verified answer
X^2 + 2x - 15 = 0
D = 4 + 4*15 = 4 + 60 = 64 = 8^2
x1 = ( - 2 + 8)/2 = 6/2 = 3
x2 = ( - 2 - 8)/2 = - 10/2 = - 5
Ответ
- 5; 3
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Answers & Comments
Verified answer
X^2 + 2x - 15 = 0D = 4 + 4*15 = 4 + 60 = 64 = 8^2
x1 = ( - 2 + 8)/2 = 6/2 = 3
x2 = ( - 2 - 8)/2 = - 10/2 = - 5
Ответ
- 5; 3