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What is the value of this please help

What Is The Value Of This Please Help class=

Sagot :

AL2006
The symbol  √  means "square root of".   √16  means "square root of 16".
It's a number that gives  16  when you multiply the number by itself.

There are two numbers that can both do the job.    They are +4 and -4.

(+4) times (+4) = 16

(-4) times (-4) = 16