A(x) + B(x) = (x^{3 ₊} 4x²-5x -3 ) + ( -3x²-x³+5x +5 )

=(x³-x³)+(4x²-3x²)+(-5x+5x) +( -3 +5)

= x² +2

Suy ra : P(x) = x²+2

Ko có số nguyên tố nào hết

làm bài nào vậy bạn

I like spring most. I’m joyful and happy every new year coming. Maybe boisterous air of spring always bring full vitality feeling to everyone. Spring has tree in flower, bird in twitter, everyone in new clothes, everyhouse in new repaired. Tet is an important event of spring, it is an occasion to those who work far from their house/ country be able to get together in family. They forget the past diffcult things, the unlucky chance, and of course they are willing to send many wishes together. They always pray for health, work, happiness.

My dream house is a large villa. It is near the coast, surrounded by rows of coconut trees and the blue sea. There are sixteen rooms in my house and half of them for relaxation and entertainment. It has a big garage so that I can store my super cars there. My house has wind power or solar energy. I use hi-tech and automatic machines such as a smart clock, modern fridge, automatic dishwasher and washing machine. They can be controlled by voice and help me tell the time, forecast weather, preserve food and wash dishes and clothes. There is a super smart TV in my house. I might surf the internet, watch my favourite TV programmes from space or contact friends on other planets by this fantastic TV. I might also join online classes on TV and not have to go to school.

đúng ko bạn

1.has - have

2.having - have

3.my father friends - my father 's friends

4.this-next

làm bao giờ mới xong

dài thế