Question

find the squares using the given pattern.
45²= (4*5)*100+25
a.65
b.85​

Answer 1

Answer:

a) 4225

b) 7225

Step-by-step explanation:

Given that 45²=(4×5)×100+25

Here, 4 and 5 are the digits of the given number.

But 100 is got by (2×45)+10 or 45+45+10=100. That is 10 added to 2 times the given number.

a) 65² = (6×5)×140+25=4225

Here, 140 is got by (2×65)+10=130+10

b) 85² = (8×5)×180+25

Here, 180 is got by (2×85)+10=170+10

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