$(\sqrt{a}+\sqrt{b})(\sqrt{a}-\sqrt{b})=(\backslash sqrt\; a+\backslash sqrt\; b)(\backslash sqrt\; a-\backslash sqrt\; b)\; =$ ............

$(\frac{a}{3}+\frac{b}{5})(\frac{a}{3}-\frac{b}{5})=\mathrm{.}\mathrm{.}\mathrm{.}\mathrm{.}\mathrm{.}\mathrm{.}\mathrm{.}\mathrm{.}\mathrm{.}(\backslash frac\; a3+\backslash frac\; b5)(\backslash frac\; a3-\backslash frac\; b5)=.........$

Number of terms in $a{x}^2+bx+cax^2+bx+c$ is ………

$(a-b)(a^2+ab+b^2)=(a\; -\; b)\; (a^2\; +\; ab\; +\; b^2)\; =$ ...........

(x + 3) (x + 2) =

$9x^2-y^2=9x^2\; -\; y^2\; =$ ...........

$\frac{4a^2-1}{2a+1}=\mathrm{.}\mathrm{.}\mathrm{.}\mathrm{.}\mathrm{.}\mathrm{.}\mathrm{.}\backslash frac\{4a^2-1\}\{2a+1\}=.......$

$(3x^2-7x+9)÷0=(3x^2\; -\; 7x\; +\; 9)\; \backslash div0\; =$ ........

$m^3(m-2)+2m^2(m+3)-6m(m-4)=m^3\; (m\; -\; 2)\; +\; 2m^2\; (m\; +\; 3)\; -\; 6m\; (m\; -\; 4)\; =$ ..........

Cube of (a + 1) is = ……………