1.

(0.3a-0.2b) (0.3a-0.2b)

Answer»

Hey!!


Using IDENTITY

( a^2 + B^2 ) = ( a - b )( a - b )

(0.3a - 0.2b)(0.3a - 0.2b) \\  \\  =  > 0.09a {}^{2}  + 0.04b {}^{2} .



HOPE it HELPS!



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