FACTORISE:-
1)ab^2-bc^2-ab+c^2.
2)2b^2+8ab+4ac+bc.
help me with these problems. ...........
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1) ab²-bc²-ab+c²
= ab²-ab-bc²+c²
= ab(b-1)-c²(b-1)
= (b-1)(ab-c²)
2) 2b²+8ab+4ac+bc
= 2b²+bc+8ab+4ac
= b(2b+c)+4a(2b+c)
= (2b+c)(b+4a)
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