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ryurochkin1
@ryurochkin1
March 2022
2
8
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Выполни действие
a)(5√5-√45)*√5
б)(√3+√x)(√3-√x)
в)(2√x+√y)^2
Вычисли
Г )√81-10√32*√2
д)√7.2*√0.2-2√0.16
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qw1k
% корень
a) (5%5-%9*5)*%5=2%5*%5=2*5=10
b) 3-x
c) 4x+y+4%xy
d) 9-(10%2*16)*%2=9-40%2*%2=9-40*2=-81
e) %7.2*%0.2-2*0.4= 1.2*0.4=0.48
0 votes
Thanks 1
kolobok1431
A) (5√5-√45)*√5 = 5 * √5² - √(45*5) =5 * 5 - √(9 * 25) = 25 - 3* 5=25-15=
10
б) (√3+√x)(√3-√x) = √3² √х² =
3 - х
в) (2√x+√y)² = 4√х² + 4√(ху) + √у² =
4х + 4√(ху) + у
г ) √81-10√32*√2 = 9 - 10
√16 * √2 * √2 = 9 - 10 *4 * 2 = 9 - 80 =
- 72
д) √7.2 * √0.2 - 2√0.16 = √(0,36 * √20 * √0,2 - 2 * 0,4 = 0,6 * 2 - 0,8 = 1,2 - 0,8 =
0,4
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Thanks 0
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Answers & Comments
a) (5%5-%9*5)*%5=2%5*%5=2*5=10
b) 3-x
c) 4x+y+4%xy
d) 9-(10%2*16)*%2=9-40%2*%2=9-40*2=-81
e) %7.2*%0.2-2*0.4= 1.2*0.4=0.48
б) (√3+√x)(√3-√x) = √3² √х² = 3 - х
в) (2√x+√y)² = 4√х² + 4√(ху) + √у² = 4х + 4√(ху) + у
г ) √81-10√32*√2 = 9 - 10 √16 * √2 * √2 = 9 - 10 *4 * 2 = 9 - 80 = - 72
д) √7.2 * √0.2 - 2√0.16 = √(0,36 * √20 * √0,2 - 2 * 0,4 = 0,6 * 2 - 0,8 = 1,2 - 0,8 = 0,4