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Q: How do you find surds?

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Roots that are irrational are called surds. There are irrational numbers that are not surds since they are not roots of any equation. For example, Pi. Rational roots, such as square root of 4, are not surds.

Irrational number are NOT called surds. For example, pi is irrational but it is not a surd.Surds are a very small subset of irrational numbers.

A surd is a square root which cannot be reduced to a whole number: however you need to be able to simplify them.

surds:- if this is for the Mail on Sunday GK crossword YES IT IS

You will apply them when solving quadratic equations in which the quadratic expression cannot be factorised.

Related questions

No. Surds are a part of maths, and are the opposite of powers.

Roots that are irrational are called surds. There are irrational numbers that are not surds since they are not roots of any equation. For example, Pi. Rational roots, such as square root of 4, are not surds.

Irrational numbers

the limit does not exist

No, surds can never be negative.

Whoever it was who discovered that if you had a square whose sides were one unit long, the lengths of its diagonals were sqrt(2) - surds!

Surds are normally irrational numbers but they can be simplified for instance the square root of 12 can be expressed as 2 times the square root of 3

Irrational number are NOT called surds. For example, pi is irrational but it is not a surd.Surds are a very small subset of irrational numbers.

No because surds are irrational numbers

They define irrational numbers

How one understands surds depends on the person. If you would like to know what surds are, or have help understanding surds A surd is an unresolved radical, meaning that it is a root with the radical sign still on it. It is easier (and more accurate) to express it this way than writing it out for many numbers if the root is irrational. The concept of irrational numbers (which is what surds are, usually) can be confusing. In short, they are numbers that are not rational, that is, they cannot be written as a fraction. When using surds in math, you treat them just as you would a written out number.

Surds may be used to calculate diagonals of squares or rectangles or equivalently, the hypotenuses of right angled triangles. While this may seem a pointless exercise, consider the following: if you have a dorrway that is 2 m high and 1 m wide, can you get a 2.2 m wide sheet through it without bending it? Of course, it won't go through straight up but what if you tilt it? What is the longest stick you can fit in a box whose dimensions are known? Use surds to find out.

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