Question

Simplify: ( ++)2 + ( −+)2 + ( +−)2

Answer 1

Answer:

$-2$

Step-by-step explanation:

$( ++)2 + ( -+)2 + ( +-)2$

$++ = +$

$-+ = -$

$+- = -$

$( +)2 + ( -)2 + ( -)2$

$2-2-2$

$=-2$