Expand an exact surd expression
Expand and simplify \((\sqrt{ 2 }+\sqrt{ 7 })^{2}\). Enter the rational part, the coefficient of the radical term, and the radicand inside the square root.
Worked practice: exact algebra
Separate the rational part from the radical part and keep the surd simplified.
Write a full answer
Now write the response in full, in your own words — this is what the exam asks for. The AI marks it on the same moves you built above (focus, evidence, technique, judgement) and gives feedback on reasoning, evidence, and expression.