`{:(x + y = 6),(x - y = 2):}`

{:(3x - y = 2),(6x + 2y = 4):}

{:(3x - y = 2),(6x + 2y = 4):}

{:(3x - y = 5),(6x - 2y = 10):}

{:(3x + y = 18),(6x + 2y = 16):}

Solve for x and y 2x + y = 6 and 2x - y = 2

3x - y= 5, 6x - 2y = 10 .

Solve the following system of linear equations by matrix method: x + 2y + z = 6, 2x + y + 2z=6, x - y - z = 2

(5x + 6y) (3x - 2y) = ____

Simplify, (x - y ) ^(2) + (x-y) - 6x (x ^(2) - y ^(2))