Question

m + n = 5 mn= 6 (m²+n²)(m³+ n³)= ​?

Answer 1

Answer: hey there, = 455

Step-by-step explanation: m + n = 5

Squaring on both the 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

now

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

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

= 5 × 7

=35

therefore;

({m}^{2}  +  {n}^{2} )({m}^{3}  +  {n}^{3} )

13×35 = 455 !

hope it helps you !!!

Answer 2

Step-by-step explanation:

hope it helps you my friend!