please solve it correctly . I will mark as brainleist
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Hope it helps you
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manjunpai2000:
am trying
which class are you studying ?
degree 1st yr
do you have answer of the 2nd question
No I don't have because , this question is from ‘ do yourself exercise’ .
If you got it then no problem upload it .
am not getting a perfect answer
please upload it then, I can get some hint to solve it .
yeah
in the second question x=8
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x = 1 or 2 if 64 (9ˣ) - 84(12ˣ) + 27(16ˣ) = 0
Step-by-step explanation:
64 (9ˣ) - 84(12ˣ) + 27(16ˣ) = 0
=> 64 ( 3²ˣ) - 84(4ˣ * 3ˣ) + 27(4²ˣ) = 0
=> 64 ( 3²ˣ) - 48(4ˣ * 3ˣ) - 36(4ˣ * 3ˣ) + 27(4²ˣ) = 0
=> 16(3ˣ)( 4 * 3ˣ - 3 * 4ˣ) - 9(4ˣ)(4 * 3ˣ - 3*4ˣ) = 0
=> (16(3ˣ) - 9(4ˣ) ( 4 * 3ˣ - 3 *4ˣ) = 0
4 * 3ˣ - 3 * 4ˣ = 0
=> 4/3 = (4/3)ˣ
=> x = 1
16(3ˣ) - 9(4ˣ) = 0
=> (4/3)ˣ = (16/9)
=> (4/3)ˣ = (4/3)²
=> x = 2
Learn more:
2^x-4 . 5^2x-13=100000.find x - Brainly.in
https://brainly.in/question/9488312
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