18. Divide 63 in three parts in such a way that they form a GP and the
product of the first two parts is equal to 3/4 times third part.
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Answered by
4
Answer:
Step-by-step explanation:let a,(ar),ar✓ be the three parts of 63.
…a + ar +(ar)2=63…………(1)
A/Q,
a×ar=3/4ar✓
a✓r/ar✓=3/4
a/r=3/4
a=3r/4………………(2)
Using(2) in (1),we get
3r/4+3r✓/4+(3r×r)/4=63
3r/4(1+r+r✓)=63
r3+r✓+r=84
r3+r✓+r-84=0
…….....................….…..........do yourself.
Hence proved.
Answered by
0
Answer:
do you know what...... by using formula of 3 terms a/r,a,ar,ar^2.......
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