Question

4p^2-9q^2+30qr-25r^2 factorise it with clear steps
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Answer 1

Answer:

Step-by-step explanation:

4p2−9q2

⇒(2p)2−(3q)2 [a2−b2=(a+b)(a−b)]

⇒(2p+3q)(2p−3q)

Answer 2

Answer:

4p² - (9q² - 30qr + 25r²)

=> 4p² - [(3q)² - 2(3q)(5r) + (5r)²]

=> 4p² - (3q - 5r)²

=> [4p + 3q - 5r].[4p - 3q + 5r]