Give the expresion A=(x-5)^2+(y+7)^2
Find the values of x and y such that y=0
A = x3 _ 4xy + y2 biet tri tuyet doi x-1 + tich cua 2 2y+4 =0
TÌm các cặp số nguyên (x;y) thỏa mãn 1/x + 1/y =2
tìm x, y biết \(\frac{x^2+y^2}{10}=\frac{x^2-2y^2}{7}\) và \(x^4.y^4=81\)
Complete the sentences with the suitable wrord the suitable word from the box
1. Solar power can be ................ into electricity
2. Fossil fuels can be used to.......... electricity or drive big machinery
3. use electricity economically so that we can....... our electricity bills
4.We should............ using cars or motorbike for short trips
5. Businesses have..... more money in renewable energy in recent years
tìm từ thích hợp điền vào chỗ trống
Complete the sentences with the suitable verb from the box in the future continuous
1. What clothes do you think she ........ when she arrives?
2. My uncle can't come to your party tomorrow night because he ....................... at night
3.Linda...............in Ha Noi around March
4.You ................... Frenchin Quebec because local people do it , too
5 At this time tomorrow evening,I............ computer games in my bedroom.
1 a) 2x = 5y và x2+y2=133
giúp mik với T.T
Tìm x,y biết \(21^x+16^y-10=\left(\sqrt{3}\right)^{y!}\)
