Question 615572
{{{ (x+2)^2=16 }}}
Take the square root of both sides
{{{ x + 2 = 4 }}}
{{{ x = 2 }}}
and, taking the negative square root
{{{ x + 2 = -4 }}}
{{{ x = -6 }}}
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Check:
{{{ (2+2)^2=16 }}}
{{{ 4^2 = 16 }}}
{{{ 16 = 16 }}}
and
{{{ (-6+2)^2=16 }}}
{{{ (-4)^2 = 16 }}}
{{{ 16 = 16 }}}
OK