Try some examples: 2 + 2 = 4, 4 + 12 = 16, 1002 + 3024 = 4026. This shows that the statement is true for these examples, but to prove that it is true all the time we must use algebra.

Further examples on the addition formula Here's another example to work through. This time you need to draw two right-angled triangles to help you with your working.

Math Riddles for Class 8: Check out Algebraic Expressions Class 8 Puzzles for Preparing Important Topics for Class 8 Mathematics. Learn the tricks and solutions for algebraic problems.

The string can take many formats (for example: LaTeX, Ascii-Math, or mathematical expressions that you can write with a keyboard). mathExpression-input is an annotated property.