Multiply these binomials. (2 x+5) and (4 x-3) - Vidyadip

Question

Multiply these binomials.
$(2 x+5)$ and $(4 x-3)$

✓

Answer

We have, $(2 x+5)$ and $(4 x-3)$
According to the question,
$(2 x+5) \times(4 x-3)$
$=(2 x) \times(4 x-3)+5 \times(4 x-3) $
$ =(2 x \times 4 x)-(2 x \times 3)+(5 \times 4 x)-(5 \times 3) $
$ =8 x^2-6 x+20 x-15 $
$ =8 x^2+14 x-15 \quad \text { [adding like terms] }$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "2 Marks Questions" from Algebraic Expressions and Identities→Algebraic Expressions and Identities — all question types→MATHS STD 8 question papers→Gujarat Board STD 8 question papers→Gujarat Board question paper generator→

Similar questions

A new born bear weighs $4\ kg$. How many kilograms might a five year old bear weigh if its weight increases by the power of $2$ in $5$ years?

Using division of polynomials, state whether.
$4x - 1$ is a factor of $4 x^2-13 x-12$

Find the square root of the following by long division method.
$27.04$

Find the square root of the following by long division method: $97344$

$6$ men can complete the electric fitting in a building in $7$ days. How many days will it take if $21$ men do the job$?$

Solve $\frac{13}{5}-5 x=13$

Write the following numbers in standard form:
$0.0006$

Express the following in standard form:
$180000$

Divide $72 x y z^2$ by $-9 x z$

By what least number should the given number be divided to get a perfect square number? In case, find the number whose square is the new number.
$9075$