Помогите решить 2 , 3. Created by Slender000. matematika-ru

2.1) a*b>02) b/2<03) -a>04) b-a>0Ответ: 2) b/23.Ответ: 4)

Помогите решить 2 , 3...

Slender000 @Slender000

June 2022 1 25 Report

Помогите решить 2 , 3

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Banabanana

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2.
1) a*b>0
2) b/2<0
3) -a>0
4) b-a>0
Ответ: 2) b/2

3.
$1) \ \ \frac{5 \sqrt{2} -5 \sqrt{3} }{ \sqrt{6} } = \frac{(5 \sqrt{2} -5 \sqrt{3}) \sqrt{6} }{6 }= \frac{5 \sqrt{12}-5 \sqrt{18} }{6} = \frac{10 \sqrt{3} -15 \sqrt{2} }{6}$

$2) \ \ \frac{ \sqrt{20}* \sqrt{35} }{ \sqrt{7^3} }= \frac{2 \sqrt{5}* \sqrt{5}* \sqrt{7} }{7 \sqrt{7} } = \frac{2*5}{7} = \frac{10}{7}=1 \frac{3}{7}$

$3) \ \ ( \sqrt{3}+5 )^2=3+10 \sqrt{3}+25=28+10 \sqrt{3}$

$4) \ \ \frac{ \sqrt{10}* \sqrt{15} }{ \sqrt{6} } = \frac{ \sqrt{150} }{ \sqrt{6} }= \frac{5 \sqrt{6} }{ \sqrt{6} }=5$

Ответ: 4)

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