Question

factories 144a^2-121b^2​

Answer 1

Question :-

Factorize 144a² - 121b²

Formula to use :-

a²-b² = (a-b)(a+b)

• a = 12a
• b = 11b

Expressing 144a² and 121b² as (12a)² and (11a)²,

(12a)² - (11b)²

Applying the identity :-

☞ (12a - 11b)(12a + 11b)

Some more identities :-

☞ (a+b)² = a² + 2ab + b²

☞ (a-b)² = a² - 2ab + b²

☞ (x+a)(x+b) = x² + x(a+b) + ab

☞ (a+b+c)² = a² + b² + c² + 2ab + 2bc + 2a

Hope it helps!

Happy day!