2x²+10x-5=0,. solve it by substitution method
Answers
Answered by
1
Step-by-step explanation:
2
x
2
+
10
x
+
5
=
0
Use the quadratic formula to find the solutions.
−
b
±
√
b
2
−
4
(
a
c
)
2
a
Substitute the values
a
=
2
,
b
=
10
, and
c
=
5
into the quadratic formula and solve for
x
.
−
10
±
√
10
2
−
4
⋅
(
2
⋅
5
)
2
⋅
2
Simplify.
Tap for more steps...
x=−5±√15/2
The result can be shown in multiple forms.
Exact Form:
x=−5±√15/2
Decimal Form:
x
=
−
0.56350832
…
,
−
4.43649167
…
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