Evaluate the following using the identity ( x + a ) ( x + b ) = x2 + ( a + b ) x + ab:-
a) (x + 7 ) ( x + 5 )
b) ( 3x – 7 ) ( 3x + 4 )
c) ( a + 1 ) ( a – 2 )
pls answer this with the correct steps
I want steps to be there which means i want all the calculations too
it would be a great help solving these questions
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