radomes.openskiesproject.org
Kassidi123black Kassidi123black
  • 28-11-2016
  • Mathematics
Answered

If (x+1)(x+4) -(x-2)=0 what is the value of x?

A: -1

B: - 1/4

C: 0

D:1/4

E: 1

Verified Answer :

mozarth11
mozarth11 mozarth11
  • 28-11-2016

(x+1)(x-4)-(x-2) = 0
x²-4x+x-4-x+2 = 0
x²-4x-2 = 0
/\ = (-4)² - 41(-2)
/\ = 16 + 8
/\ = 24
x = (-(-4)+/- \/24) / 2
x = (4+/-\/4*6)/2
x = (4+/-2\/6)/2
x = 2+/-\/6
x' = 2+\/6
x" = 2-\/6

Answer Link
ash07192001
ash07192001 ash07192001
  • 06-04-2020

Answer:

A) 1

B) 1/16

C) 1/256

Answer Link

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