Question

it's urgent answer me​

Answer 1

Step-by-step explanation:

this is your questions -

1) a ( b - c ) - b ( c- a ) - c ( a- b )

solution -

1) a ( b - c ) - b ( c- a ) - c ( a- b )

= ab - ac - bc + ab -ac + bc

= ab + ab -ac -ac - bc+ bc

=2ab - 2ac

2) 3x^2 +2 ( x+ 2 )-3x ( 2x +1 )

= 3x^2 + 2x + 4 - 6x^2 - 3x

= 3x^2 - 6x^2 +2 x- 3x + 4

= - 3x^2 -x + 4

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