How to factorise 100-(x-5)2 ,means square.

100 - (x-5)2 
= 102- (x-5)2       [using a2 - b2 = (a-b)(a+b)]
= (10 - x + 5)(10+x-5)
=(15-x)(5+x)

  • 5
100 - (x-5)2
= 102- (x-5)2       [using a2 - b2 = (a-b)(a+b)]
= (10 - x + 5)(10+x-5)
=(5-x)(5+x) is the factorised form 
  • -4
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