TwanaZumbrunnen TwanaZumbrunnen
  • 21-05-2014
  • Mathematics
contestada

y2 + 14y + 49 = 0 Please help me :)

Respuesta :

Аноним Аноним
  • 21-05-2014
[tex]y^2+14y+49=0\\\\\underbrace{y^2+2\cdot y\cdot7+7^2}_{(*)}=0\\\\(y+7)^2=0\iff y+7=0\to y=-7\\\\-----------------------\\\\(*)\ \ \ (a+b)^2=a^2+2ab+b^2[/tex]
Answer Link

Otras preguntas

Why did the plantation system of agriculture developed in the southern united states instead of the north eastern united states?
How is 0.00036 written in scientific notation?
230000 in standard form
What are the effects of the different types of pollution on the environment
a tick living on a dog is mutualism or commenalism
9. One way in which playwrights develop characters is through dialogue. Define dialogue. Then choose Alice or Humpty Dumpty from Alice in Wonderland. Analyze
Why is the financial department of a company important?
Es una pieza dramática que provoca las emociones del público mediante diálogos profundos y serios. la comedia el drama la ópera la tragedia
Arrange these numbers from least to greatest -3/7 ,-5/6 ,-3/5 ,-7/9
In the rhombus m<1=4y-2, . find the value of y.