Q.1 = 49a²- 70ab + 25b²
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Answer:
(7a-5b)^2
Step-by-step explanation:
49a^2-7ab+25b^2
49a^2-35ab-35ab+25b^2
7a(7a-5b)-5b(7a-5b)
(7a-5b)(7a-5b)
(7a-5b)^2
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