Mathematics for IGCSE & O level - Equations (Section 1 - No. 34)
When is it essential to give your answer correct to a certain number of decimal places?
When solving equations by factorization.
When you are using the quadratic formula.
When the question specifically asks for it.
When the answer involves a whole number.
Forklaring
The question will explicitly request the answer with a specific number of decimal places.