katykarime425 katykarime425

07-09-2020
Mathematics

contestada

alguien me ayuda con estas ecuaciones puras? a) x²-49=0 b) x²-81=0 c) 10x²- 40=0

Respuesta :

danipel8 danipel8

09-09-2020

Answr:

a) x²-49 = 0 b) x²-81 = 0 c) 10x²- 40 = 0

Solucion:

RTA:

a)x=7,x=-7

b) x²-81 = 0:x =9,x=-9

c)10x²- 40 = 0 :x =2,x=-2

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