Expand
$(3 a-4)^{2}$
Find the quotient and the remainder when $2 x^{2}-7 x-15$ is divided by
$2 x+3$
Factorise the following quadratic polynomials by splitting the middle term
$6 x^{2}+19 x+10$
Find the quotient and the remainder when $x^{3}+x^{2}-10 x+8$ is divided by
$x+4$
Factorise
$16 x^{2}+40 x y+25 y^{2}$