Math, asked by shehranalam7, 3 months ago

Factorise. 25a^2–4b^2–49+28b

Answers

Answered by Anonymous

7

25a² – 4b² – 49 + 28b

(5a)² – (2b)² – (7)² + 22b7

(5a)² – [(2b)² + (7)² - 22b7]

(5a)² – (2b - 7)²

[5a + (2b - 7)] [5a – (2b - 7)]

(5a + 2b - 7) (5a – 2b + 7)

Answered by Anonymous

2

Answer:-

(5a + 2b - 7) (5a - 2b + 7)

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