Question

x² = 16 ??

and

x = √16 = ??

is both have answer of ±4 ?? if yes then reason , if no then reason

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thanks

Answer 1

Dear student,

Sure both have answer of ±4.
Reason Is given below...

given is...

x² = 16
${x} = \sqrt{16}$
we can write x² = 16 as
x = √16
which is equal to...
$x = 4$
Hence, Proved....

Hope this answer helps you a lot....

Answer 2

If we solve the both equation then the answer will be +-4
reason is 1st equation is a linear equation which will give the 2nd equation by solving in some steps .
it will lead to answer 4
its sign will be plus or minus because both will result in 16 when they are squared
and we also know that boyh minus and plus numbers result in possitive square value