\(M\left(Z_1,N_2\right)vaX\left(Z_2,N_2\right)\)

\(2Z_1+N_1+2Z_2+N_2=108\)

\(2\left(Z_1+Z_2\right)-\left(N_1+N_2\right)=36\)

\(Z_1+N_1-Z_2-N_2=8\)
\(2Z_1+N_1-2-\left(2Z_2+N_2+2\right)=8\)

Từ hệ trên 

\(M\left(Z_1,N_1\right)\)nhé mình nhầm

\(\left(x^2+25+150\right)\left(x^2+30x+216\right)=2x^2\)

\(\Rightarrow\left[\left(x+12,5\right)^2-6,25\right]\left[\left(x+15\right)^2-9\right]=2x^2\)

\(\Rightarrow\left(x+15\right)\left(x+10\right)\left(x+18\right)\left(x+12\right)=2x^2\)

Đến đây tách như lớp 8 ,dài quá nên mk lười :) bạn tự giải nha

thanks làm tiếp để thế hệ sau tham khảo :

\(\Rightarrow\left(x+15\right)\left(x+12\right)\left(x+10\right)\left(x+18\right)=2x^2\)

\(\Rightarrow\left(x^2+27x+180\right)\left(x^2+28x+180\right)=2x^2\)

Chia cả hai vế cho x² 

\(\Rightarrow\left(x+27+\frac{180}{x}\right)\left(x+28+\frac{180}{x}\right)=2\)

Đặt \(a=x+\frac{180}{x}\)

\(\Rightarrow\left(a+27\right)\left(a+28\right)=2\)

\(\Rightarrow a^2+56a+756=2\)

\(\Rightarrow a^2+56a+754=0\)

tìm nghiệm rồi thế vào :

1.His story appears to be true.

2.A famous actress appear in a play at the local theater.

trả lời : appears

             appear

Ever since I was young, I had the good fortune to see my mother's smile: a smile full of affection. That is the greatest happiness in the world. It is unfortunate for many people not to see the smile of the mother. Pain instead of those who overwhelmed and rejected that smile.

Someone said, "Smile makes people get closer together". Yes, it was that smile that helped me fully understand my immeasurable love, a feeling that nothing can buy. And that smile is an immense universe that I cannot fully discover. But I know it is the strength that keeps me up every time I stumble, is my belief, is the reason of my life. But mom's smile is not always the same. Every time I was good, my mother smiled, a smile of love, joy. It made me feel that I had done something great for my mother. Then my mother's smile encouraged and encouraged me whenever I got good grades. That smile makes the joy multiply, making me see how beautiful this life is when having a mother in the world. Sometimes I have a sad story, my mother still laughs but is a comforting and comforting smile. That smile is a pink flame, warms the worried, sobbing young heart ... What's more beautiful in life than that, knowing that Mom is with me. The mother's smile warmed my heart, gave me strength. But sometimes there is no mother's smile! And then, the more I realized that mom's smile was a big "fortune" for me...