18² =........, Write the square of the given number.
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Hello friend!
We will perform simple multiplication to obtain our final correct answer.
See the attachment for calculation!
Hope it helps!
We will perform simple multiplication to obtain our final correct answer.
See the attachment for calculation!
Hope it helps!
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Answered by
0
Solution :
18²
= ( 20 - 2 )²
*************************************
We know the algebraic identity:
( a - b )² = a² - 2ab + b²
**************************************
= 20² - 2×20×2 + 2²
= 400 - 80 + 4
= 320 + 4
= 324
Therefore ,
18² = 324
••••
18²
= ( 20 - 2 )²
*************************************
We know the algebraic identity:
( a - b )² = a² - 2ab + b²
**************************************
= 20² - 2×20×2 + 2²
= 400 - 80 + 4
= 320 + 4
= 324
Therefore ,
18² = 324
••••
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