danatapiaaa danatapiaaa

04-05-2020
Mathematics

contestada

Solve for all values of x by factoring.
X? – 48 = 1

Respuesta :

ghanami ghanami

05-05-2020

Answer:

Step-by-step explanation:

hello :

x²-48 =1

x²-48-1 =1-1

x²-49=0 means : x²-7²=0

by identity : a²-b²= (a-b)(a+b)

by factoring: (x-7)(x+7)=0

x-7=0 or x+7=0

x=7 or x= -7

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