If log 8 a + log 4 b^2 =5 and log 8 b + log4 a^2=7 then find value of ab
Answers
Answered by
45
------------------( 1 )
-------------( 2 )
now the equation will be ,
y/3 + x = 5
(y + 3x)/3 = 5
3x + y = 15--------------( 1 )
AND,
x/3 + y = 7
(x + 3y)/3 = 7
x + 3y = 21----------( 2 )
from----( 1 )
y = (15 - 3x) [ put in ----( 2 )]
x + 3(15 - 3x) = 21
x + 45 - 9x = 21
-8x = 21 - 45
-8x = -24
x = -24/-8 = 3 [ put in -----( 1 )]
3x + y = 15
3(3) + y = 15
y = 15 - 9
y = 6 , x = 3
now,
Answered by
0
Answer:
Step-by-step explanation:
answer is 2 to the power 9 = 512
Similar questions