GCSE Maths Practice: forming-equations

Question 3 of 10

This question tests forming equations from areas of combined shapes. Rectangle + square.

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\( \begin{array}{l}\text{A rectangle with length x + 5 and width x is joined to a square of side 4 cm.} \\ \text{The total area is 84 cm^2. Which equation models the area?}\end{array} \)

Choose one option:

\( x(x + 5) + 4^2 = 84 \) \( x + 5 + x + 4 = 84 \) \( (x + 5)(x + 4) = 84 \) \( x(x + 5) = 84 - 4 \)

Calculate each area separately, then add to form the equation.

Find total area by summing individual areas. Substitute given lengths and widths.

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