Question
Simplify : $\frac{a^2+10 a+21}{a^2+6 a-7} \times \frac{a^2-1}{a+3}$
✓
Answer
$\frac{a^2+10 a+21}{a^2+6 a-7} \times \frac{a^2-1}{a+3}$
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
Find the volume, lateral surface area and the total surface area of the cuboid whose dimensions are:
Length $=15 m$, breadth $=6 m$ and height $=9 dm$.
→Length $=15 m$, breadth $=6 m$ and height $=9 dm$.
Areas of some circles are given below, find their diameters.
176 sq.cm
The area of a trapezium is $91 cm^2$ and its height is 7 cm . If one of the parallel sides is longer than the other by 8 cm , find the two parallel sides.
→Simplify : $\frac{3 x^2-x-2}{x^2-7 x+12} \div \frac{3 x^2-7 x-6}{x^2-4}$
→Find the volume, curved surface area and total surface area of the cylinders whose dimensions are:
Radius of the base = 5.6m and height = 1.25m.
Radius of the base = 5.6m and height = 1.25m.
A labourer is engaged for 20 days on the condition that he will receive Rs. 60 for each day, he works and he will be fined Rs. 5 for each day, he is absent. If he receives Rs. 745 in all, for how many days he remained absent?
Ratio of consecutive angles of a quadrilateral is 1 : 2 : 3 : 4. Find the measure of its each angle. Write with reason, what type of a quadrilateral it is.
Solve the following equations :
→$13 x-5=\frac{3}{2}$
Divide the sum of $\frac{-13}{5}$ and $\frac{12}{7}$ by the product of $\frac{-31}{7}$and$\frac{-1}{2}$.
→6400 workers were employed to construct a river bridge in four years. At the end of the first year, 25% workers were retrenched. At the end of the second year, 25% of those working at that time were retrenched. However, to complete the project in time, the number of workers was increased by 25% at the end of the third year. How many workers were working during the fourth year?