Task/24053482
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<span>sinx * sin7x = 1
</span>a) <span>{ sinx = -1 ; sin7x = - 1. x</span>∈∅
b)
{ sinx = 1 ; sin7x = 1. x∈∅
4) (11d-4n)(11d+4n)
<span>(11d-4n)(11d+4n)=121d^2-16n^2
Ответ:</span>121d^2-16n^2<span>
3)</span>(5n+5)^2-16
(5n+5)^2=25n^2=50n=25
25-16=9
Ответ:25n^2=50n=25
1-2) сама
5/9 + m/n=(5n+9m)/9n все))))))))))
X=2
y=5
$$3"=:/#4:=#="="=#÷