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(**) Adding Squared Numbers In The
Form: a2 + (3a)2:
A. This method is very easy
since from algebra we know:
a2 +
(3a)2 = 10a2
B. Therefore, you square the
smaller number, then multiply by 10 for the answer.
Ex [1] 322 + 962 =_________.
a)
322 = 1024. See Squaring
Numbers.
b)
1024 x 10 = 10240.
c)
The answer is 10240.
Ex [2] 492 + 1472 =_________.
a)
492 = 2401. See Squaring Numbers in the Range: 40 - 49.
b)
2401 x 10 = 24010.
c)
The answer is 24010.
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