Question

$(x + y - 3) {}^{2} = 2(x + 1)(y - 4)$
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Answer 1

(x+y-3)(x+y-3)=(2x+2)(y-4)

x²+xy-3x+xy+y²-3y-3x-3y+9= 2xy-8x+2y-8

x²+ý²+ 2xy - 6x -6y +9 = 2xy-8x + 2y -8

x²+ y²+ 2x - 8y + 17 =0

x²+2x + y²- 8y+ 17 =0

x( x+2) + y ( y-8) +17 =0