2026 NCHS P1 Q5

2026 NCHS P1 Q5

Secondary 4
4 marks
  1. Factorise \(8p^3q-18pq^3\) completely.[2]
    1. Expand and simplify \((2x+5y)^2\).[1]
    2. Hence or otherwise, given that \((2x+5y)^2=4(x^2-10x+25)\), where \(y\) is a constant. Find the value of \(y\).[1]

Solution:

Solution locked

Sign in to view the step-by-step solution

Similar questions are unavailable for this question.
Answer:(a) \(2pq(2p-3q)(2p+3q)\) (b)(i) \(4x^2+20xy+25y^2\) (ii) \(y=-2\) (identity interpretation).

Need help? Join our JC Math tuition classes.

Learn more