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никанет4
@никанет4
August 2022
1
7
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решите срочно пж. 7; 10; 11; 12.
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bogatowa
7) (а-3)^2-25=а^2-6а+9-25=а^2-6а-16=(а-8)(а+2) ответ: 7 - б
10) х^2+х-х^2+2х+3х-6-4=0
6х-10=0
х=1 2/3 ответ: 10 - в
11) 9х^2-6х+6х-4-х-х^2+1+х=0
8х^2-3 ответ: 11 - б
12) 4-12х+9х^2+1+8х+16х^2-25х^2+5х-5х+1=0
-4х+6=0
х=1 1/2 ответ: 12 - б
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Answers & Comments
10) х^2+х-х^2+2х+3х-6-4=0
6х-10=0
х=1 2/3 ответ: 10 - в
11) 9х^2-6х+6х-4-х-х^2+1+х=0
8х^2-3 ответ: 11 - б
12) 4-12х+9х^2+1+8х+16х^2-25х^2+5х-5х+1=0
-4х+6=0
х=1 1/2 ответ: 12 - б