Melaka Trial 2025 Add Maths Paper 1, Question 10Quadratic Functions

Solved on video in English · Form 4, Quadratic Functions · 7:23 video

The question

(a)

(a) Solve the quadratic inequality x² − 2x > 35 by using the number line method.

(b)

(b) A quadratic function g(x) = (x + p)(x + q) intersects the x-axis at points M and N. The distance of point M is 5 units to the left of the y-axis, while the distance of point N is 3 units to the right of the y-axis. State the minimum point.

Melaka Trial 2025 Add Maths Paper 1, Question 10: the question as drawn in Eduly's video7:23

Part (a)

Step 1

Move everything to one side: x² − 2x − 35 > 0.

Why this step

The number line method needs zero on one side. If you factorise x² − 2x while 35 is still on the right, the factors tell you nothing.

3 more steps, each with the reason for it, in the full solution

Final answer

x < −5 or x > 7

Where students lose marks

Watch out: for > 0 choose the outer regions, not the middle one, and bring 35 across before factorising.

Part (b)

5 more steps, each with the reason for it, in the full solution

Final answer

(−1, −16)

Where students lose marks

Watch out: a root at x = −5 gives the factor (x + 5), not (x − 5). And give both coordinates of the minimum point.

Watch every step of this question solved on video (7:23), with the reason behind each step and a box that checks your own answer.

Start 7 days freeAlready a member? Watch it now

No card. Every past-year question on video, in English and BM.

All questions in Melaka Trial 2025 Paper 1

Quadratic Functions: lessons and every past-year question

More Quadratic Functions questions

Questions are re-typeset by Eduly for study and commentary. Eduly is not affiliated with Lembaga Peperiksaan Malaysia or the Ministry of Education.