Question

25a ² - ab²+28 bc -49c2​

Answer 1

Answer:

(5a+7c)(5a-7c)+b(28c-a)

Step-by-step explanation:

25a²-ab²+28bc-49c²

= 25a²-49c²+28bc-ab²

= (5a)²-(7c)²+28bc-ab²

= (5a+7c)(5a-7c)+b(28c-a)

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