Question

Si 2K²=72, entonces K²+10K-K-5=

Answer 1

Que pregunta tan dificil

Answer 2

2k² = 72

k² = 72/2

k² = 36

k=√36

k= 6

Ahora:
k²+10k-k-5 = x
k²+9k-5 = x
6²+9*6-5 = x
36+54-5 = x
90-5 = x

x= 85

El total es 85

Saludos...