Simplifying surds by addition and subtraction | Maths Made Easy

Surds GCSE Maths Revision

Part 04 – Simplifying surds by addition and subtraction

Example:

Simplify 3√5+7√5-4√5-√5

Worked Solution:

Use the formulae m×√a≡m√a and m√a±n√a≡(m±n) √a

3√5+7√5-4√5-√5=(3+7-4-1) √5=5×√5=5√5


Your turn:

Simplify 8√10+13√10-6√10-√10

Need some extra help? Find a tutor now

Or, call 020 3633 5145