Question

Realizar la siguiente operación: (x-2)²+x(x-3)=3(x+4)(x-3)-(x+2)(x-1)+2

Answer 1

Sale 4

Explicación:

(x-2)²+x(x-3) = 3(x+4)(x-3)-(x+2)(x-1)+2

x²-4x+4+x²-3x = (3x+12)(x-3)-(x²-x+2x-2)+2

2x²-7x+4 = 3x²-9x+12x-36-(x²+x-2)+2

2x²-7x+4 = 3x²-9x+12x-36-x²-x+2+2

2x²-7x+4 = 2x²+2x-32

-7x+4 = 2x-32

-7x-2x = -32-4

-9x = 36

x = 4