👤

Rezolvati ecuatia:
x(x-5)+8=(x+4)(x-4)-3(x-4)


Răspuns :

x(x-5)+8=(x+4)(x-4)-3(x-4)
x•x-5•x+8=x^2-4•4-3•x-3•(-4)
x^2-5x+8=x^2-16-3x+12
x^2-x^2-5x+3x=-4-8
-2x=-12
x=-12:(-2)
x=6