Question

( 7m - 6n ) ( 7m+ 6n ) = ( 7m )2 fill in the blanks​

Answer 1

given : (7m-6n) x (7m+6n)

we know that : (a-b)^2= a^2 - 2ab + b^2

and (a+b)^2 = a^2 + 2ab + b^2

Then: (7m-6n)^2 x (7m+6n)^2

=> [(7m)^2 - 2(7m)(6n) + (6n)^2] x [(7m)^2 + 2(7m)(6n) + (6n)^2]

=> (49m^2 - 84mn + 36n^2) x (49m^2 + 84mn + 64n)

=> 49m^2 - 84mn + 36n^2 x 49m^2 + 84mn + 64n

=> know u will find okkk

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