Question

solve this
2x-4=0

where x = 1,2,-2



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Answer 1

2x-4=0

if x =1

2(1)-4=0

2-4=0

-2=0

if x=2

than

2(2)-4=0

4-4=0

0=0

if x=-2

than

2(-2)-4=0

-4-4=0

-8=0