SOLUTION: Solve by completing the square. x2 = 5x + 2
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Question 978593
:
Solve by completing the square. x2 = 5x + 2
Found 2 solutions by
428225, ikleyn
:
Answer by
428225(90)
(
Show Source
):
You can
put this solution on YOUR website!
.
Answer by
ikleyn(52781)
(
Show Source
):
You can
put this solution on YOUR website!
1. Rewrite your equation as
=
.
2. Complete the square for the polynomial in the left side
=
-
-
=
-
-
=
-
=
-
.
3. Now your equation is
-
=
.
4. Rewrite it in the form
=
.
5. Take the square root in both sides:
= +/-
.
6. Now
=
+/-
.
You got two roots. Congratulations!