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IzotovaVika
@IzotovaVika
July 2022
2
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(X-5)^2-x(10+x)
Упростите выражение и найдите его значение при x =-1/20
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Answers & Comments
ShirokovP
Verified answer
X^2 - 10x + 25 - 10x - x^2 = - 20x + 25
x = - 1/20
- 20*(-1/20) + 25 = 1 + 25 = 26
6 votes
Thanks 5
ВикаВикторовна
Verified answer
(х-5)²-х(10+х) = х²-10х+25-10х-х² = -20х+25
-20х+25 = -20 * (-1/20) + 25 = 1+25 = 26
7 votes
Thanks 9
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Answers & Comments
Verified answer
X^2 - 10x + 25 - 10x - x^2 = - 20x + 25x = - 1/20
- 20*(-1/20) + 25 = 1 + 25 = 26
Verified answer
(х-5)²-х(10+х) = х²-10х+25-10х-х² = -20х+25-20х+25 = -20 * (-1/20) + 25 = 1+25 = 26