Question

(m - n ) 3


3 (x + 5 ) =45

( m + n) 2

2×+5​

Answer 1

Respuesta + Explicación paso a paso:

1. (m-n)3 = m3 - 3m2n + 3mn2 -n3

2. 3(x+5)= 45

3x+15= 45

3x= 45- 45

3x=30

x= 30/3

x= 10

3. (m+n)2

m2 + mn + mn + n2

m2 + 2mn + n2

4. 2x+5= 0

2x=0-5

2x= -5

x= -5/2  = -2.5