SPM 2020 Add Maths Paper 2, Question 1Systems of Equations

Solved on video in English and Bahasa Melayu · 5 marks · Form 4, Systems of Equations · 4:08 video

The question

Solve the simultaneous equations 3p - n = 1 and p/n + p = 2. Give your answer correct to three decimal places.

[5 marks]

Step 1

From the linear equation, make n the subject: 3p - n = 1 => n = 3p - 1 ... (1)

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

Final answer

p = 1.577, n = 3.732 or p = 0.423, n = 0.268

Where students lose marks

Watch out: don't force a factorisation. Use the quadratic formula, take care with a, b, c, and round to 3 decimal places.

Watch every step of this question solved on video (4:08), with the reason behind each step and a box that checks your own answer.

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