Factors of $m^2\text{–}4m\text{–}21\dots \dots m^2\; –\; 4m\; –\; 21\; \dots \dots$

$4x^2+20x\text{–}96=\dots 4x^2\; +\; 20x\; –\; 96\; =\; \dots$

$70x^4÷14x^2=\mathrm{.}\mathrm{.}\mathrm{.}\mathrm{.}70\backslash ,x^4\backslash div14\backslash ,x^2=....$

$(6a^2+30a)÷(a+5)=\mathrm{.}\mathrm{.}\mathrm{.}\mathrm{.}(6a^2+30a)\backslash div(a+5)=....$

$(6x^4+10x^3+8x^2)÷2x^2=(6x^4+10x^3+8x^2)\backslash div2x^2=$

$30(a^{2}bc+a{b}^{2}c+ab{c}^2)÷6abc=\mathrm{.}\mathrm{.}\mathrm{.}30(a^2bc+ab^2c+abc^2)\backslash div6abc=...$

$x(3x^2\text{–}108)÷3x(x\text{–}6)=\dots x(3x^2\; –\; 108)\; \backslash div\; 3x\; (x\; –\; 6)\; =\; \dots$

$(m^2\text{–}14m\text{–}32)÷(m+2)=\dots \dots (m^2\; –\; 14\; m\; –\; 32)\; \backslash div\; (m\; +\; 2)\; =\; \dots \dots$

$16z^2\text{–}48z+36=\dots \dots 16\; z^2\; –\; 48\; z\; +\; 36\; =\; \dots \dots$

$3x^2+6x^{2}y+9x{y}^2=\dots \dots 3x^2\; +\; 6x^2y\; +\; 9xy^2\; =\; \dots \dots$