Question

Factorise
(1)(ac + bd)^2 - (ad+bc)^2
(2) a^4 + 3a + 4
(3) 3x^3y - 243xy^3
(4) 25x^2 + 10xy + y^2 - z^2

Please answer it fast


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Answer 1

Answer:

2)a⁴ +3a +4

:- a⁴ (a×4)=4a

So, 4a +3a+4

=7a+4

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