Seudónimo Seudónimo

02-04-2015
Mathematics

contestada

What is the value of X in the following equation (x-2)(x+8)=0 and (x-7) to the second power=0

Respuesta :

Panoyin Panoyin

03-04-2015

(x - 2)(x + 8) = 0
x - 2 = 0 or x + 8 = 0
+ 2 + 2    - 8 - 8
   x = 2    x = -8

(x - 7)² = 0
√(x - 7)² = √(0)
x - 7 = 0
+ 7 + 7
   x = 7

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