tranhuuthach169 tranhuuthach169
  • 11-09-2021
  • Mathematics
contestada

timf 3 số tự nhiên lẻ liên tiếp, biết tích của hai số lớn nhất lớn hơn 6 lần số bé nhất là 177 đơn vị

Respuesta :

nguyenlien11101984
nguyenlien11101984 nguyenlien11101984
  • 11-09-2021

Answer:

13, 15, 17

Step-by-step explanation:

Gọi 3 STN lẻ cần tìm là a, a+2, a+4 (a thuộc N*)

Theo đề bài ta có:

(a + 2)(a + 4) - 177 = 6a

=> a^2 + 4a + 2a + 8 = 6a + 177

=> a^2 + 6a + 8 = 6a + 177

=> a^2 + 6a - 6a = 177 - 8 (chuyển vế)

=> a^2 = 169 = 13^2

=> a = 13

=> a+2 = 15, a+4 = 17

Vậy 3 STN lẻ cần tìm là 13, 15, 17

Answer Link

Otras preguntas

Why for thousand of years people believed that stars moved across earth sky
What colony was purchased for the purpose of providing an outlet to the sea? Delaware New Jersey Pennsylvania
How did prince Henry change the course of Portugals history
What two groups in ancient India challenged Brahmanism, and why?
42 is what percent of 140
Why did merchants decide to use money instead of bartering? A. Money was easier to carry and handle than goods. B. Money was accepted anywhere and could be used
what is sin^2x/1+cosx
Please help! Hannah practices her guitar for 40 minutes on Monday. On Tuesday she practices for 5/8 of the time she practiced on Monday . On Wednesday she pract
How do you solve 224/7 using distributive property?
Asoka is known for all of the following except carving policies of nonviolence on stone pillars building rest houses by roads for travelers defeating the army o