Squaring Number ending with 5

Example:95

Step 1:Multiply the number (leaving 5) by number + 1

9 * 10 = 90

Step 2:Add 25 to the last part of Answer (got in setp 1)

90(got from the Step 1) +25(Step 1 + 25 )

Answer:9025

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Example : 725

step 1: 72 * 73 = 5256

Step 2: Step 1 + 25

Answer : 525625

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Example:1445

Step 1: 144 * 145 =20880

Step 2: Step 1 + 25

Answer:2088025