Question

if m+n=6 , mn = 5 ,then value of m³+n³?

Answer 1

yes given that
m+n = 6, mn= 5
.°. m³+n³=(m+n)³-3mn(m+n)
= 6³-3.5.6
= 216-90
= 126

Answer 2

m³ + n³ = ( m + n) ( m² + n² - mn)
= (6) [ ( m+n) ² - mn]
= 6 [ (6)²- 5]
= 6×36 - 5
= 216-5
= 211

m³ + n³ = 211

HOPE IT HELPS YOU..