Question

2. Factorize the following expressions and write them in the product form.
121a2-81b2c2​

Answer 1

Answer:

$121 {a}^{2} - 81 {b}^{2} {c}^{2} \\ ( {11a)}^{2} - ( {9bc)}^{2} \\ (11a + 9bc)(11a - 9bc)$

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Answer 2

Answer:

(11a - 9bc)(11a + 9bc)

Step-by-step explanation:

121a^2 - 81b^2c^2

using formula

a^2- b^2 = (a-b) (a+b)

=(11a)^2 - (9bc)^2

= (11a - 9bc) (11a +9bc)