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Robert
Mathematics
25 November, 00:24
Completing the sqaure
x^2+14x+34
+3
Answers (
1
)
Gina Adams
25 November, 00:51
0
-7-√15
Step-by-step explanation:
First move the constant to the right hand side and change it's sign
x^2+14x=-34
Then add (14/2) ^2 or 7^2 to both sides
x^2+14x+49=-34+49
Then factor the expression
(x+7) ^2=-34+49
Then solve (x+7) ^2=15
You should get:
x=-√15-7
or
x=√15-7
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