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X^2-49

 Nov 5, 2015

Best Answer 

 #1
avatar+56 
+3

X = 7

If x^2-49=0

 Nov 5, 2015
 #1
avatar+56 
+3
Best Answer

X = 7

If x^2-49=0

ChoZerr Nov 5, 2015
 #2
avatar+118587 
+5

X^2-49

 

You need to be careful ChoZerr, there is no = sign in the question so there CANNOT be an answer.

Not like you have found anyway.

 

x^2-49 is already in its most simple form.

BUT

since it is of the from   x^2  -  7^2

it can very easily be factorised to give  (x-7)(x+7)

 

oh and IF

x^2 - 49 did really equal 0 then there are 2 answers,   x=7  or x=-7

 Nov 5, 2015

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