Q1 of 157 Page 30

Choose the correct answer for the following:
The factors of 169l² – 441m² are ________

Given 169l² – 441m²

∵ (a² – b²) = (a – b) × (a + b)

⇒ 169l² – 441m² = (13l)² – (21m)²

⇒ 169l² – 441m² = (13l – 21m)(13l + 21m)

The factors of 169l² – 441m² are (13l – 21m) and (13l + 21m).

Choose the correct answer for the following:

The factors of x² – x – 12 are ______

Choose the correct answer for the following:

The factors of 6x² – x – 15 are(2x + 3) and ___________

Choose the correct answer for the following:

The product of (x – 1) (2x – 3) is ____

Factorize the following expressions :

3x – 45

Questions · 157

1. Algebra

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Choose the correct answer for the following:The factors of 169l2 – 441m2 are ________