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Home Q & A Board Science-Related Homework Help Mathematics
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firetruckboom firetruckboom
wrote...
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12 years ago
Solve the quadratic equation by factoring.

(x - 5)2 = 0
 
  A)  x = 5, x = -5  
  B) x = 0, x = -5  
  C) x = 5 (double root)  
  D) x = -5 (double root)  
 



The first step in solving quadratic equations by factoring is _____________.  
   A) Set each factor = 0 and solve.  
   B) Set each factor = 0.  
   C) Set each equation = 0.  
   D) Factor completely.
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wrote...
#1
12 years ago
C) x = ²?5

("double root" must be "square root", right?)

---------------------------

D) factor completely
wrote...
#2
12 years ago
(x - 5)2 = 0
2x - 10 = 0
2x = 10
x = 5
-------------------------------
C
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wrote...
#3
12 years ago
assuming (x-5)2 is not 2 x -10 but (x-5)(x-5)
D) is answer

second question is D
wrote...
#4
12 years ago
1. D, 2. C
wrote...
#5
12 years ago
1- a) X=5,X=-5
2=c) set each equation =0
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