Fill in the missing boxes.
$\left(y-3\right)\left(y-4\right)$(y−3)(y−4)$=$=$y^2+\editable{}+12$y2++12
Expand and simplify the following:
$\left(x+7\right)\left(x-10\right)$(x+7)(x−10)
Expand and simplify the following:
$\left(5m+8\right)\left(m-3\right)$(5m+8)(m−3)
Expand and simplify the following:
$\left(7y-6\right)\left(6y+6\right)$(7y−6)(6y+6)