Square of 135 without actual multiplication.
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Answered by
3
(135)²
= (130+5)²
= (130)²+2.130.5+(5)²
= 16900+1300+25
= 18225
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Answered by
0
Answer:
135 can be written as:
(100 + 35)
⇒ (100 + 35)²
Acc to identity:
(a+b)² = a² + 2ab + b²
a = 100
b = 35
⇒ (100)² + 2(100)(35) + (35)²
= 10000 + 7000 + 1225
= 17000 + 1225
= 18225 Ans
(135)² = 18225
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