Giúp mình vs ạ chỉ cần lm câu b thui ạ

B) 8,16 : ( 1,32 + 3,48 ) - 0,345 :2

Chứng minh rằng giá trị của các biểu thức sau ko phụ thuộc vào giá trị của biến

Giúp mình câu 3 4 5 với ạ . Mình cảm ơn

Hellllllllllllllpppppppppppppppp

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GIÚP MIK RÚT GỌN BIỂU THỨC VỚI Ạ!

Rút gọn biểu thức: a) √31² b) √(2-2√5)² - 2√5 c) √4a² + 2a d) √(a-3)² với a>3 e) √(4+2√3) + √3

Ex6: Complete the second sentences so that it has the same meaning as the first one. Don’t change the word given. 1. We will use waves as an environmentally friendly energy source. Waves…………….. 2. They will install a network of turbines to generate electricity. A network of turbines………… 3. I will turn off the lights when leaving a room or going to bed. The lights……………… 4. People in the countryside will increase the use of biogas for cooking. The use of……….. 5. We will use less biogas in the future. Less biogas……… 6. People won’t burn fossil fuels for energy in the future. Fossil fuels……….. 7. They will install solar panels on the roof of the house next week. Solar panels……………. 8. They often walk to the bus station. They often go……... 9. Is your bike red, Minh? Is the red……………. 10. These are Nam’s balloons. These balloons……………….

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