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myr9myr9myr
@myr9myr9myr
August 2022
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Срочно нужно первое и второе , пожалуйста .
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fadarm
Verified answer
1) 15x-3-4x+8=120-12x ⇒ 23x=115 ⇒ x =5
2а) 10m²+2mn-15mn-3n²-10m²-20mn-10n²=-33mn-13n²
2б)
1 votes
Thanks 1
Flash3146
(5x-1)/4-(x-2)/3=10-x|*12
15x-3-4x+8=120-12x
11x+12x=120+3-8
23x=115|:23
x=5
(2m-3n)(5m+n)-10(m+n)²=10m²+2mn-15mn-3n²-10(m²+2mn+n²)=10m²-13mn-3n²-10m²-20mn-10n²=-33mn-13n²
(-3a²b³)³*(-2a^5b)²=-27a^6b^9*4a^10b²=
-108a^16b^11
1 votes
Thanks 1
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Answers & Comments
Verified answer
1) 15x-3-4x+8=120-12x ⇒ 23x=115 ⇒ x =52а) 10m²+2mn-15mn-3n²-10m²-20mn-10n²=-33mn-13n²
2б)
15x-3-4x+8=120-12x
11x+12x=120+3-8
23x=115|:23
x=5
(2m-3n)(5m+n)-10(m+n)²=10m²+2mn-15mn-3n²-10(m²+2mn+n²)=10m²-13mn-3n²-10m²-20mn-10n²=-33mn-13n²
(-3a²b³)³*(-2a^5b)²=-27a^6b^9*4a^10b²=
-108a^16b^11