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RebekkaKloup
@RebekkaKloup
July 2022
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litanalove
Verified answer
I. 1) (1/7a + 1/2a)=(2 +7)/14a =9/14a
2) 9/14a * a²/4 =9a²/14a*4 =9a/56 =9*(-2.8) /56 = -0.45
ответ: -0.45
II. 16x и 8x сокращаем,
=(xy+y²) /2(x+y) =y(x +y) /2(x+y) =y/2 = -8.5/2 = -4.25
тк иксы сократились, то подставляем только У
2 votes
Thanks 4
1401Tamara
Verified answer
1) (1/7a + 1/2a)*a^2/4 = (2+7)/14a*a^2/4 = 9/14a*a^2/4 = 9a/56 =
= 9*(-2,8)/56 = -25,2/56 = -0,45
2) (xy+y^2)/16x*8x/(x+y) = y(x+y)/16x * 8x/(x+y) = y/2 = (-8,5)/2 = -4,25
2 votes
Thanks 1
litanalove
а в числителе лишняя, тк в обоих знаменателях она присутствует
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Answers & Comments
Verified answer
I. 1) (1/7a + 1/2a)=(2 +7)/14a =9/14a2) 9/14a * a²/4 =9a²/14a*4 =9a/56 =9*(-2.8) /56 = -0.45
ответ: -0.45
II. 16x и 8x сокращаем,
=(xy+y²) /2(x+y) =y(x +y) /2(x+y) =y/2 = -8.5/2 = -4.25
тк иксы сократились, то подставляем только У
Verified answer
1) (1/7a + 1/2a)*a^2/4 = (2+7)/14a*a^2/4 = 9/14a*a^2/4 = 9a/56 == 9*(-2,8)/56 = -25,2/56 = -0,45
2) (xy+y^2)/16x*8x/(x+y) = y(x+y)/16x * 8x/(x+y) = y/2 = (-8,5)/2 = -4,25