Question

(-5+7)²-(12+9)²-[-(-4)×(-5+4)]²=​

Answer 1

$(-5+7)^{2} -(12+9)^{2} -[-(-4) .(-5+4)]^{2} =$

$(2)^{2} - (21)^{2} - [4 .(-1)]^{2}$

$4 - 441 - [-4]^{2}$

$4-441- 16$

$-437 - 16$

$-453$