30. Factorize: (7 a2 - 63 b2).
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Answered by
0
Answer:
7a^2 - 63b^2
= 7( a^2 - 9b^2 )
7 ( a - 9b ) ( a + 9b )
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Answered by
1
Answer:
7(a+3b)(a-3b)
Step-by-step explanation:
7a^2-63b^2
=7(a^2-9b^2)
=7{(a^2)-(3b)^2}
=7(a+3b)(a-3b)
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