$(-3x+3)^2 = $   ?

$9\,x^2\, -18\,x\,+ 9$ $9\,x^2\, -9\,x\,+ 9$ $-6\,x^2\, -18\,x\,+ 9$ $9\,x^2\, +18\,x\,+ 9$

$(10x-6y)^2 = $   ?

$100\,x^2\, -120\,x\,y\,+ 6\,y^2$ $100\,x^2\, +120\,x\,y\,+ 36\,y^2$ $10\,x^2\, -120\,x\,y\,+ 36\,y^2$ $100\,x^2\, -120\,x\,y\,+ 36\,y^2$

$(1+6x)^2 = $   ?

$1\,+ 36\,x^2$ $1\, -12\,x\,+ 36\,x^2$ $1\, +12\,x\,+ 36\,x^2$ $2\, +12\,x\,+ 36\,x^2$

$(y-5x)^2 = $   ?

$\,y^2\, -5\,x\,y\,+ 25\,x^2$ $\,y^2\, -10y\,+ 25\,x^2$ $\,y^2\, +10\,x\,y\,+ 25\,x^2$ $\,y^2\, -10\,x\,y\,+ 25\,x^2$

$(12+7y)(12-7y) = $   ?

$144 \,- 49y$ $144\, +168\,y\,+ 49\,y^2$ $144 \,- 49\,y^2$ $144 \,- 7\,y^2$

$(3y+11)(3y-11) = $   ?

$3y \,- 11$ $9\,y^2 \,- 121$ $9\,y^2\, -66\,y\,+ 121$ $9\,y^2 \,+ 121$