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question about which is NOT a surd

Answer 1

`√(72)`

`√(201)`

`√(52)`

These are surd

so A and D are not surd

Explanation:

A surd is an expression that includes a square root, cube root or other root symbol. Surds are used to write irrational numbers precisely – because the decimals of irrational numbers do not terminate or recur, they cannot be written exactly in decimal form.