Question

if m+n=5 and mn=6 so find the cost of (m square+n square)(m cube +n cube)​

Answer 1

Answer:

The Answer is given below :)

Step-by-step explanation:

m + n = 5

Squaring on both sides :-

(m + n)^2 = 25

25= m^2 + 2mn + n^2

25 = m^2 + n^2 + 2(6)

m^2 + n^2 = 25 - 12

m^2 + n^2 = 13

Then :-

m^3 + n^3 = (m+n)(m^2 - mn + n^2)

m^3 + n^3 = 5 ( 13 - 6 )

= 5 × 7

=35

Therefore :-

13×35 = 455

Answer 2

let m=5+n

then n(5+n) =6

5n+n^2=6

(n-5) (n-1) =0

then you can find m