hanna9766 hanna9766
  • 23-01-2020
  • Mathematics
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x^2+4x=15 complete the square​

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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

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