x(y - 3) 3(x - y)+ ______ at x = 1, y= -2
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Given ➷
x = 1
y = -2
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Solution ➷
=> x( y - 3 ) x 3( x - y )
─> 1( -2 -3) x 3[ 1 - (-2) ]
─> 1(-5) x 3( 1 + 2 )
─> -5 x 3(3)
─> -5 x 9
─> -45
∴ x( y - 3 ) x 3( x - y ) = -45
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