SSS2 Maths Quiz 18.2 – Substitution in fractions

If \( x = 2 \) and \( y = 3 \), evaluate:
\[
\frac{x + y}{x – y}
\]

Given \( a = 4 \) and \( b = -2 \), find the value of:
\[
\frac{a^2 – b^2}{a + b}
\]

If \( x = -1 \) and \( y = 2 \), evaluate:
\[
\frac{x^2 – y^2}{y – x}
\]

Simplify:
\[
\frac{p^2 – q^2}{p – q}
\]

Given \( x = 3 \), find the value of:
\[
\frac{x^2 – 9}{x – 3}
\]

If \( a = 1 \) and \( b = 2 \), evaluate:
\[
\frac{a^3 + b^3}{a + b}
\]

If \( x = 4 \) and \( y = -2 \), find:
\[
\frac{x^2 – y^2}{x + y}
\]

Given \( m = 2 \) and \( n = -3 \), evaluate:
\[
\frac{m^2 – n^2}{m – n}
\]

Simplify:
\[
\frac{a^2 + 2ab + b^2}{a + b}
\]

Simplify:
\[
\frac{x^3 – y^3}{x – y}
\]