Factorise. $$\(15(k+g)^{2}-20(k+g)\)$$
Exam No：0580_m21_qp_42 Year：2021 Question No：9(a)(ii)
Answer:
\(5(k+g)(3 k+3 g-4)\) final answer
Knowledge points:
E2.2.1 Manipulate directed numbers.
E2.2.2 Use brackets and extract common factors.
E2.2.3 Expand products of algebraic expressions. (e.g. expand (x + 4)(x – 7)) (Includes products of more than two brackets, e.g. (x + 4)(x – 7)(2x + 1))
E2.2.4.1 ax+bx+kay+kby
E2.2.4.4 more contents
Solution:
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