Squaring of a number ending with 5

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Use the x2{\displaystyle x^{2}}

x^{{2}}

 key on a scientific calculator. Scientific calculators are calculators that contain a variety of functions needed in upper level maths. Scientific calculators contain a key labeled {\displaystyle x^{2}}

x^{{2}}

. Hitting this key will give you the square of a number. To use it, type in the number being squared, then hit the {\displaystyle x^{2}}

x^{{2}}

 key.

For example, to calculate {\displaystyle 75^{2}}

75^{{2}}

 on a scientific calculator, you would type {\displaystyle 75,x^{2}}

75,x^{{2}}

. You should see a result of {\displaystyle 5625}

5625
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