Factorise (i) 30x3y + 24x2y2 – 6xy (ii) 5x(a – b) + 6y(a –b)
(i) The greatest monomial that is a common factor of the three terms is 6xy. ... 30x3y + 24x2y2 - 6xy = 6xy(5x2 + 4xy – 1) (ii) Here the polynomial (a – b) is a common factor. ...5x(a – b) + 6y(a – b) = (a – b)(5x + 6y)