X2+7x-3 by factorisation method
Answers
Answered by
1
Answer:
x=
2
61
+7
≈7.405124838
x=
2
7−
61
≈−0.405124838
pls folo me n mrk brainliest
Step-by-step explanation:
Answered by
2
Step-by-step explanation:
Explanation:
x
2
+
7
x
−
3
=
0
The equation is of the form
a
x
2
+
b
x
+
c
=
0
where:
a
=
1
,
b
=
7
,
c
=
−
3
The Discriminant is given by:
Δ
=
b
2
−
4
⋅
a
⋅
c
=
(
7
)
2
−
(
4
⋅
(
1
)
⋅
(
−
3
)
=
49
+
12
=
61
The solutions are found using the formula
x
=
−
b
±
√
Δ
2
⋅
a
x
=
(
−
7
)
±
√
61
2
⋅
1
=
(
−
7
)
±
√
61
2
The solutions are:
x
=
−
7
+
√
61
2
Similar questions