hanna9766 hanna9766
  • 23-01-2020
  • Mathematics
contestada

x^2+4x=15 complete the square​

Respuesta :

texaschic101
texaschic101 texaschic101
  • 23-01-2020

Answer:

Step-by-step explanation:

x^2 + 4x = 15.....take half of ur x term, then square it, then add to both sides

x^2 + 4x + 4 = 15 + 4

(x + 2)^2 = 19

sqrt (x + 2)^2 = sqrt 19

x + 2 = sqrt 19

x = -2 (+ - ) sqrt 19

so x = -2 + sqrt 19 or x = -2 - sqrt 19

Answer Link

Otras preguntas

please help !!!!!!!!!!!!-
The function b(x) = 2x − 5 determines how many bags of dog food need to be purchased for an animal shelter, where x is the number of dogs at the shelter. The sh
When n is divided by 12, the remainder is 6. What is the answer when n is divided by 6?
The average distance from the sun to Venus is 67,237,910 miles. The average distance from the sun to earth is 92,955,807 miles
X/4-17 in word phrase
A survey of one class at Pioneer Middle School found that 20 out of 30 students would spend $12 for a school t-shirt Suppose there are 600 students in the schoo
can u help me for 10 points!!!
How was the African slave trade adapted to European needs?
How does a hypothesis help scientist undertsand the natural world?
the product of 2.5 and a number t