if x+9/2-10/3=5x/6+7x/9-3 find the value of x²/2
Answers
Answered by
0
Step-by-step explanation:
Correct option is
B
2
log
10
(7x−9)
2
+log
10
(3x−4)
2
=2
⇒log
10
(7x−9)
2
(3x−4)
2
=2[∵loga+logb=log(ab)]
⇒(7x−9)
2
(3x−4)
2
=10
2
=100
⇒(21x
2
−55x+36)
2
=100
⇒21x
2
−55x+36=±10
21x
2
−55x+26=0
x=
42
55±
3025−2184
=
42
55±29
=2,
21
13
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Answered by
1
Answer:
log
10
(7x−9)
2
+log
10
(3x−4)
2
=2
⇒log
10
(7x−9)
2
(3x−4)
2
=2[∵loga+logb=log(ab)]
⇒(7x−9)
2
(3x−4)
2
=10
2
=100
⇒(21x
2
−55x+36)
2
=100
⇒21x
2
−55x+36=±10
21x
2
−55x+26=0
x=
42
55±
3025−2184
=
42
55±29
=2,
21
13
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