Solve by using Quadratic formula x² +2x + 1 =0 *
Answers
Answer:
Enter a problem...
Algebra Examples
Popular Problems Algebra Solve Using the Quadratic Formula x^2-2x-1=0
x
2
−
2
x
−
1
=
0
Use the quadratic formula to find the solutions.
−
b
±
√
b
2
−
4
(
a
c
)
2
a
Substitute the values
a
=
1
,
b
=
−
2
, and
c
=
−
1
into the quadratic formula and solve for
x
.
2
±
√
(
−
2
)
2
−
4
⋅
(
1
⋅
−
1
)
2
⋅
1
Simplify.
Enter a problem...
Algebra Examples
Popular Problems Algebra Solve Using the Quadratic Formula x^2-2x-1=0
x
2
−
2
x
−
1
=
0
Use the quadratic formula to find the solutions.
−
b
±
√
b
2
−
4
(
a
c
)
2
a
Substitute the values
a
=
1
,
b
=
−
2
, and
c
=
−
1
into the quadratic formula and solve for
x
.
2
±
√
(
−
2
)
2
−
4
⋅
(
1
⋅
−
1
)
2
⋅
1
Simplify.
Tap for fewer steps...
Simplify the numerator.
Tap for fewer steps...
Raise
−
2
to the power of
2
.
x
=
2
±
√
4
−
4
⋅
(
1
⋅
−
1
)
2
⋅
1
Multiply
−
1
by
1
.
x
=
2
±
√
4
−
4
⋅
−
1
2
⋅
1
Multiply
−
4
by
−
1
.
x
=
2
±
√
4
+
4
2
⋅
1
Add
4
and
4
.
x
=
2
±
√
8
2
⋅
1
Rewrite
8
as
2
2
⋅
2
.
Raise
−
2
to the power of
2
.
x
=
2
±
√
4
−
4
⋅
(
1
⋅
−
1
)
2
⋅
1
Multiply
−
1
by
1
.
x
=
2
±
√
4
−
4
⋅
−
1
2
⋅
1
Multiply
−
4
by
−
1
.
x
=
2
±
√
4
+
4
2
⋅
1
Add
4
and
4
.
x
=
2
±
√
8
2
⋅
1
Rewrite
8
as
2
2
⋅
2
.
Tap for fewer steps...
Factor
4
out of
8
.
x
=
2
±
√
4
(
2
)
2
⋅
1
Rewrite
4
as
2
2
.
x
=
2
±
√
2
2
⋅
2
2
⋅
1
Pull terms out from under the radical.
x
=
2
±
2
√
2
2
⋅
1
Multiply
2
by
1
.
x
=
2
±
2
√
2
2
Simplify
2
±
2
√
2
2
.
x
=
1
±
√
2
The result can be shown in multiple forms.
Exact Form:
x
=
1
±
√
2
Decimal Form:
x
=
2.41421356
…
,
−
0.41421356
…
Step-by-step explanation:
I had solved ur previous question also just look at that
THALAPATHY FAN
