Question
Factorise:
$a^2-b^2-a-b$
$a^2-b^2-a-b$
✓
Answer
$a^2-b^2-a-b$
$=a^2-b^2-(a+b)$
$=(a-b)(a+b)-(a+b)$
$=(a+b)(a-b-1)$
$=a^2-b^2-(a+b)$
$=(a-b)(a+b)-(a+b)$
$=(a+b)(a-b-1)$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Classify the following number as rational or irrational. give reasons to support your answer. $4.1276$
→→
Write an equation in two variables: $5y = 2$
→Express the following linear equations in the form $a x+b y+c=0$ and indicate the values of $a, b$ and $c$ in case: $2 x+3=0$
→Find which of the variables $x, y, z$ and $u$ represent rational numbers and which irrational numbers:
$\text{z}^2=.04$
→$\text{z}^2=.04$
$ABC$ is an isosceles triangle in which altitudes $BE$ and $CF$ are drawn to sides $AC$ and $AB$ respectively (See figure). Show that these altitudes are equal.
→Check whether $–2$ and $2$ are zeroes of the polynomial $x + 2$
→Which of the following expression are polynomials? $\sqrt{3}\text{x}^2-2\text{x}$
→Rationalise the denominator of $\frac{1}{7+3 \sqrt{2}}$
→Three cubes of each sides $4\ cm$ are joined end. Find the surface area of the resulting cuboid.
→