$(-8y-11)^2 = $   ?

$-64\,y^2\, +176\,y\,+ 121$ $64\,y^2\, +176\,y\,+ 121$ $64\,y^2\,- 121$ $-16\,y^2\, +176\,y\,+ 121$

$(11+5y)(11-5y) = $   ?

$11 \,- 25\,y^2$ $11 \,- 5y$ $121\, -110\,y\,+ 25\,y^2$ $121 \,- 25\,y^2$

$(-5-8x)^2 = $   ?

$25\, +40\,x\,+ 64\,x^2$ $25\, +80\,x\,+ 64\,x^2$ $-25\, +80\,x\,+ 64\,x^2$ $-10\, +80\,x\,+ 64\,x^2$

$(8x+3)^2 = $   ?

$64\,x^2\, +48\,x\,+ 9$ $64\,x^2\, +48\,x\,+ 6$ $64\,x^2\, -48\,x\,+ 9$ $64\,x^2\, +24\,x\,+ 9$

$(6y+6x)^2 = $   ?

$6\,y^2\, +72\,x\,y\,+ 36\,x^2$ $36\,y^2\, -72\,x\,y\,+ 36\,x^2$ $36\,y^2\, +36\,x\,y\,+ 36\,x^2$ $36\,y^2\, +72\,x\,y\,+ 36\,x^2$

$(9x+3y)(9x-3y) = $   ?

$9\,x^2 \,- 9\,y^2$ $81\,x^2 \,+ 9\,y^2$ $81\,x^2 \,- 6\,y^2$ $81\,x^2 \,- 9\,y^2$