Mathematics 4024 · O Level · Equations

Equations — practice question

(a)[2]

Express $x^2 - 6x - 7$ in the form $(x + a)^2 + b$. Determine the value of $a$ and the value of $b$.

(b)[2]

Use your result to solve the equation $x^2 - 6x - 7 = 0$. Show your working.

Worked solution & mark scheme

This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The value of $a$ is $-3$.” …