`{:(x + 8y = 19),(2x + 11y = 28):}`

3x+y=1,2x=11y+3

The radical axis of the circles x^(2) + y^(2) + 4x + 8y + 19 = 0 , x^(2) + y^(2) + 8x + 4y + 19 = 0 is

Solve: 2x+y = 11 x+y = 8

Solve the simultaneous equations: x+11y = 1, 8x + 13y = 2

Solve the simultaneous equations: x+11y = 1, 8x + 13y = 2

Find each of the following products: (i) (x + 3) (x - 3) (ii) (2x + 5)(2x - 5) (ii) (8 + x)(8 - x) (iv) (7x + 11y) (7x - 11y) (v) (5x^(2) + (3)/(4) y^(2)) (5x^(2) - (3)/(4) y^(2)) (vi) ((4x)/(5) - (5y)/(3)) ((4x)/(5) + (5y)/(3)) (vii) (x + (1)/(x)) (x - (1)/(x)) (viii) ((1)/(x) + (1)/(y)) ((1)/(x) - (1)/(y)) (ix) (2a + (3)/(b)) (2a - (3)/(b))

2x + 3y + z = 11, x + 2y + z = 8, x-y + z = 2