x square - 14x - 15 =0
Solve this using Completing Square Method..
Answers
Answered by
2
Answer:
8x
2
−14x−15=0
16x
2
−28x−30=0
(multiplying both sides by 2)
Adding (7/2)
2
on both the sides
(4x)
2
−2.4x.
2
7
+(
2
7
)
2
=30+(
2
7
)
2
(4x−
2
7
)
2
=30+
4
49
=
4
169
=(
2
13
)
2
4x−7/2=13/2 or 4x−7/2=−13/2
x=5/2 or x=−3/4
Step-by-step explanation:
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Answered by
1
Answer:
8x
2
−14x−15=0
16x
2
−28x−30=0
(multiplying both sides by 2)
Adding (7/2)
2
on both the sides
(4x)
2
−2.4x.
2
7
+(
2
7
)
2
=30+(
2
7
)
2
(4x−
2
7
)
2
=30+
4
49
=
4
169
=(
2
13
)
2
4x−7/2=13/2 or 4x−7/2=−13/2
x=5/2 or x=−3/4
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