Year 9 Maths Introduction to Quadratic Equations and Graphs

Solving ax^2+bx=0 and x^2=d

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Questions

Question 1

42993

Answer

$x=\pm \dfrac{5}{2}$

Worked Solution

$$
\begin{aligned}
4x^2&=25\\
x^2&=\frac{25}{4}\\
x&=\pm\sqrt{\frac{25}{4}}\\
\therefore x&=\pm \frac{5}{2}
\end{aligned}
$$

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