Evaluate this expression

Algebra
Tutor: None Selected Time limit: 1 Day

Evaluate this expression and explain each step in words.

If x = 4, what is the value of 2|3x-16|

Jul 16th, 2014

If x = 4, what is the value of 2|3x-16|

ANS :        

putting the value of x in the expression, we get

= 2|3(4)-16|

= 2|12-16|

= 2|-4|

as mod always gives the value in positive so , then -4 will change into +4

= 2(+4)        

= 8

HENCE

2|3x-16| will be equal to 8 if the value of x is 4

Jul 16th, 2014

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