x^2+2x-7=0 factorise this question
Answers
Answered by
1
Answer:
☺️
Step-by-step explanation:
This equation is a Quadratic equation (in form
a
x
2
+
b
x
+
c
=
0
)
Use the Quadratic formula:
x
=
−
b
±
√
b
2
−
4
a
c
2
a
In this case
a
=
1
,
b
=
2
,
c
=
−
7
Substitute the values:
→
x
=
−
2
±
√
2
2
−
4
(
1
)
(
−
7
)
2
(
1
)
→
x
=
−
2
±
√
4
−
(
−
28
)
2
→
x
=
−
2
±
√
4
+
28
2
→
x
=
−
2
±
√
32
2
→
x
=
−
2
±
√
16
⋅
2
2
→
x
=
−
2
±
4
√
2
2
→
x
=
−
2
2
±
4
√
2
2
→
x
=
−
2
2
±
4
√
2
2
⇒
x
=
−
1
±
2
√
2☺️
Answered by
1
Answer:
hope this will help you
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