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nexus9112 [7]
3 years ago
10

Please help !! Which of the following are solutions to the equation below? check all that apply

Mathematics
2 answers:
Gala2k [10]3 years ago
7 0
I thike so i would -4 must help u a lot
notsponge [240]3 years ago
3 0
The solutions are:  x = -5, 2 ; 
           which are Answer choices:  [E] and [F] .
<span>_________________________________________________</span>
Given:
_________________________
     x²  + 4x − 9 = x + 1  ;
___________________________
Simplify, by subtracting "x" and "1" from EACH SIDE of the equation:
______________________________________________________
    x²  + 4x − 9 − x − 1 = x + 1 − x − 1 ;
__________________________________________
to get:
___________________________________________________
    x²  + 3x − 10  = 0 ;
________________________
Now, we can factor the left-hand side of the equation:
____________________________________________
      x²  + 3x − 10 = (x + 5) (x − 2); and rewrite the equation as:
________________________________________________
  (x + 5) (x − 2) = 0 ;
________________________________________________
The solutions are:  x = -5, 2 ; 
           which are Answer choices:  [E] and [F] .
_________________________________________________
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