. Use suitable identities find -
A. (x-3) (x + 5)
B. (2a -3b )
by identity
Answers
Answered by
0
Answer:
A.(x-3)(x+5)
x²+5x-3x-15
x²+2x-15
Answered by
0
(2/a+5/b)(2a+5/b)
= (2/a+5/13)
2
= (2/a)
2
+2(2/a)(5/b)+(5/b)
2
[Using, (a+b)
2
=a
2
+2ab+b
2
]
= 4/a
2
+20a/b+25/b
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