Find the product of the following binomial: (a + 2b)(a - 2b) - Vidyadip

Question

Find the product of the following binomial:
$(a + 2b)(a - 2b)$

✓

Answer

We will use the identify $(a+b)^2=a^2+2 a b+b^2$in the given expression to find the product.
$(a + 2b) (a - 2b)$
$= a^2 - (2b)^2$
$= a^2 - 4b^2$

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 "1 Marks Question" 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

Write $'T'$ for true and $'F'$ for false for the following:
Gain is reckoned on the selling price.

The quantity of rice and its cost.

If $\frac{2}{5}\text{x}-2=5-\frac{3}{5}\text{x}$, then $x =$ ________.

It is given that l varies directly as $m?$ Find the constant of proportion $(k),$ when l is $6$ then $m$ is $18.$

Fill in the blanks. $\frac{19}{-5}+\Big(\frac{-3}{11}+\frac{-7}{8}\Big)=\Big\{\frac{19}{-5}+(....)\Big\}+\frac{-7}{8}$

Represent the following numbers in the Roman system.
302

Check which of the following are perfect cubes :
10000

Fill in the blank. A given number is a perfect square having n digits, where n is odd. Then, its square root will have ______ digits.

Name the property of multiplication illustrated of the following statements:
$\frac{-16}{9}\times1=1\times\frac{-16}{9}=\frac{-16}{9}$

Multiply: $\frac{5}{7}\ \text{by}\ \frac{-3}{4}$