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svetadmitrova7
@svetadmitrova7
August 2022
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Упростите выражение (3х – 2)2+ 12х
А:9х2+ 4;
Б:9х2+ 24х + 4;
В:9х2– 4;
Г:9х2+ 12х + 4.
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zhenyaM2002
Verified answer
(3х - 2)² + 12х = (3х)² - 2*3х*2 +2² +12х =
= 9х² -12х +4 +12х = 9х² + 4 + (-12х +12х)=
= 9х² +4
ответ а) 9х²+4
4 votes
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Answers & Comments
Verified answer
(3х - 2)² + 12х = (3х)² - 2*3х*2 +2² +12х == 9х² -12х +4 +12х = 9х² + 4 + (-12х +12х)=
= 9х² +4
ответ а) 9х²+4