GCSE Secondary Maths Age 13-17 - Algebra: Algebra - Problem - Explained

The video tutorial explains how to solve a problem involving the area of a square. The problem requires setting up an equation based on the given area, expanding the equation, and simplifying it to find the solution. The tutorial also discusses the marks awarded for each step and mentions alternative methods to solve the problem.

What is the given area of the square in the problem?

• 15 cm²

• 10 cm²

• 20 cm²

• 5 cm²

What expression represents the side length of the square?

• X + 2

• X + 3

• X + 4

• X + 5

What is the first step in solving the equation for the square's area?

• Subtracting 9 from both sides

• Finding the value of X

• Expanding the brackets

• Setting up the equation

Which of the following is a correct step in expanding the expression (X + 3)²?

• X² + 3X + 6

• X² + 9X + 9

• X² + 6X + 9

• X² + 3X + 3

What alternative method is mentioned for solving the problem?

• Using a different formula for area

• Using a calculator

• Finding the areas of four shapes inside the square

• Graphing the equation