Expand $:(3 x+7 y)(3 x-7 y)$
Expand $:(3 x+7 y)(3 x-7 y)$
$(3 x+7 y)(3 x-7 y)=(3 x)^{2}-(7 y)^{2}$
$=9 x^{2}-49 y^{2}$
Similar Questions
Expand the following:
$(3 a-2 b)^{3}$
Expand the following:
$(3 a-2 b)^{3}$
If $\frac{x}{y}+\frac{y}{x}=-1(x, y \neq 0),$ the value of $x^{3}-y^{3}$ is
If $\frac{x}{y}+\frac{y}{x}=-1(x, y \neq 0),$ the value of $x^{3}-y^{3}$ is
Factorise each of the following
$27 x^{3}-8 y^{3}-54 x^{2} y+36 x y^{2}$
Factorise each of the following
$27 x^{3}-8 y^{3}-54 x^{2} y+36 x y^{2}$
Write the degree of each of the following polynomials
$x^{50}-1$
Write the degree of each of the following polynomials
$x^{50}-1$
Factorise :
$a^{3}-2 \sqrt{2} b^{3}$
Factorise :
$a^{3}-2 \sqrt{2} b^{3}$