Question

the 1- If A is directly proportional to C and B is directly proportional to c, prove that each of following is directly proportional to c a)A+B b)A-B

$c\sqrt ab$



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Answer 1

Answer:

8p

3

+

5

12

p

2

+

25

6

p+

125

1

=8p

3

+

125

1

+

5

6

p(2p+

5

1

)

=(2p)

3

+(

5

1

)

3

+3(2p)(

5

1

)(2p+

5

1

)[(a+b)

3

=a

3

+b

3

+3ab(a+b)]

=(2p+

5

1

)

3

=(2p+

5

1

)(2p+

5

1

)(2p+

5

1