Question

how to do (148) ² square using identities

Answer 1

Answer:

squaring using identities

Step-by-step explanation:

[148]2=[150-2]2

by using identity

[a-b]2=a2-2ab+b2

[150]2-2*150*2+[2]2

22500-600+4

21900+4

21904 is the right answer

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Answer 2

Answer:148(^2) could be written as

(140+8)^2

Now apply (a+b)^2=a+b+2ab

Therefore, ( 140+8 )^2= 140^2+8^2+2*140*8

=19600+64+2240

= 21904

Step-by-step explanation: