Question

sa se rezolve ecuatia de gr 1 (x-2)(x2-9)=5(x2-9)

Answer 1

$(x-2)(x^2-9)-5(x^2-9)=0\\(x^2-9)(x-2-5)=0\\(x-3)(x+3)(x-7)=0\\x_1=3,; x_2=-3,; x_3=7$