3x2 - 4x + 1 = 0 by perfect square method
Answers
Answered by
0
Answer:
Explanation:
Firstly, we need to deal with the coefficient of
x
2
(the 3).
In order to remove the 3 we divide the whole expression by 3.
3
x
2
−
4
x
−
2
3
=
0
3
x
2
−
4
3
x
−
2
3
=
0
next, we complete the square, here is the general formula
x
2
+
a
x
=
(
x
+
a
2
)
2
−
(
a
2
)
2
so using this formula,
x
2
−
4
3
x
−
2
3
=
0
goes to
(
x
−
4
6
)
2
−
16
36
−
2
3
=
0
simplifying down,
(
x
−
2
3
)
2
−
10
9
=
0
rearrange for x,
Answered by
0
Answer:
3.2-4x+1=0
6-4x+1=0
-4x=-1-6
-4x=-7
x=-7/4
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