$(-4+12y)(-4-12y) = $   ?

$16 \,+ 144\,y^2$ $-8 \,- 144\,y^2$ $16 \,- 144\,y^2$ $16 \,- 12\,y^2$

$(9x-5y)^2 = $   ?

$81\,x^2\, -90x\,+ 25\,y^2$ $81\,x^2\, -90\,x\,y\,+ 25\,y^2$ $81\,x^2\, -90\,x\,y\,+ 10\,y^2$ $81\,x^2\, -45\,x\,y\,+ 25\,y^2$

$(-3+6y)^2 = $   ?

$9\,+ 36\,y^2$ $9\, -36\,y\,+ 12\,y^2$ $9\, -36\,y\,+ 36\,y^2$ $9\, -36\,y\,+ 6\,y^2$

$(-9+10y)^2 = $   ?

$-81\, -180\,y\,+ 100\,y^2$ $81\, -180\,y\,+ 100\,y^2$ $81\, -90\,y\,+ 100\,y^2$ $81\, -180\,y\,+ 10\,y^2$

$(-9y+2x)(-9y-2x) = $   ?

$81\,y^2 \,- 4x$ $81\,y^2\, -36\,x\,y\,+ 4\,x^2$ $81\,y^2 \,- 4\,x^2$ $-18\,y^2 \,- 4\,x^2$

$(2y-8)^2 = $   ?

$4\,y^2\,- 64$ $4\,y^2\, -32\,y\,+ 64$ $4\,y^2\, -32\,y\,+ 16$ $2\,y^2\, -32\,y\,+ 64$