Multiplication of Algebraic Expressions

What is the area of triangle if the height and base are $\left(x+1\right)\text{cm} \text{and} \left(x-2\right)$cm?

What is the area of rectangle if the length and breadth are $\left(x+1\right)\text{cm} \text{and} \left(x-2\right)$cm?

If Kavita bought $(3x+7)$ copies from the bookseller. If the cost of each copy is rupees $(2x–1)$, then if $x=5$, then  $x$ rupees did Kavita give to the bookseller, find the value of $x$.

The speed of a train is $(2x^2+x+4)$ km per hour.

If $x=5$ , then find the distance travelled by the train in the appropriate time in $km$.

There are $2x$ classes in a school. The number of students in each class is $(x^3+2x+2)$.

Find, If $x=3$ , then how many students are there in the school?

There are $2x$ beds in a field. Each bed has $xy$ rows. Each row has $y^2$ tomato plants. Find:

If $x=3$, $y=2$, then what is the total number of plants?

Find the value of following product: $2x\times (–10x{y}^2)\times 3x^{2}y, \mathrm{if} x=1,y=2$

Find the value of the product of the following: $x^2\times 7x^5\times \frac{1}{7}{x}^3 \times (–6 x), \mathrm{for} x=1$

Multiply the following expressions and represent them geometrically. $5\times 4\mathrm{y}$

Multiply the following expressions and represent them geometrically. $2\mathrm{x}\times 6$

Find the product of the following : $(\mathrm{x}+\mathrm{a})(\mathrm{x}+\mathrm{b})$

Find the product of the following : $(5\mathrm{x}-6\mathrm{y})(4\mathrm{x}-3\mathrm{y})$

Find the product of the following : $(\mathrm{x}-7)(\mathrm{x}+9)$

Find the product of the following : $(2\mathrm{x}+3)(\mathrm{x}+5)$

Find the product of the following : $\mathrm{ab}(3\mathrm{a}-5\mathrm{b})$

Find the product of the following : $-6\times (-\mathrm{m}-3)$

Find the product of the following : $7\times (\mathrm{x}+3)$

Find the product of the following terms: ${\mathrm{x}}^6\times 5{\mathrm{x}}^3\times 2{\mathrm{y}}^2$

Find the product of the following : $\left(11{\mathrm{y}}^2{\mathrm{z}}^2\right),\left(5\mathrm{xyz}\right)$

Find the product of the following : $\left(2{\mathrm{x}}^2\mathrm{y}\right)\times \left(-3{\mathrm{xy}}^2\right)$