## Lecture

## Seminar 1

Equations\( 3x+2 = 10 \) \( x^2 = 9 \) \( 3x+2 = 10 \) | Formulae\( E = mc^2 \) \( s = ut+\frac{1}{2}at^2 \) \( F = ma \) | Identities\( \sin^2 \theta + \cos^2 \theta =1\) \( c^2 = a^2 + b^2 \) \( (x+1)^2 = x^2 + 2x + 1 \) |

## Seminar 2

\[ \begin{align}

10x - 5 \ge 3x + 2 \\

7x \ge 7 \\

\therefore x \ge 1

\end{align} \]

## Seminar 3

\[ \begin{align}

3x -2y = 18 \\

2x+y = -35

\end{align} \]