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ICSE Class 9 Answered

factorise 9(x+a) ^2 - 4x^2
Asked by sayantikasingh3318.9sdatl | 15 May, 2020, 08:24: PM
answered-by-expert Expert Answer
9(x+a)2 - 4x2
 
[3(x+a)]2 - [2x]2
 
Using identity a2 - b2 = (a + b) (a - b). we get
[3(x+a)]2 - [2x]2
= (3x + 3a + 2x) (3x + 3a -2x)
 
 
Answered by | 15 May, 2020, 10:03: PM
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