factorise : (5a-b)(5a +b)
Answers
Answered by
8
Answer:
= (5a - b) (5a + b)
= (5a)^2 - (b)^2
Answered by
9
Answer:
Step-by-step explanation:
this is in the formula a²+b²=(a+b)(a-b)
a=5a
b=b
(5a-b)(5a+b)=(5a)²-b²
=25a²-b²
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