Question

the sum of two number is 20 and the product is 196 then find the no.​

Answer 1

Step-by-step explanation:

It isn’t actually necessary to know what the two numbers are. The answer is 24120 which can be reduced to 15 .

Assume two numbers of a and b . Their reciprocal values would then be 1a and 1b. Let their sum be n. So:

n=1a+1b

⟹an=a(1a+1b)

⟹abn=(1+ab)

⟶abn=b+a

⟹n=b+aab⟹n=sumproduct

You already have what the sum and product of the numbers are without knowing the numbers, so the sum of the reciprocals is the sum of the numbers over their product, and that can be reduced to 15