Question

determinati modelul definitiei solutiilor reale ale ecuatiei x patrat -7x+12=0

Answer 1

$x^{2} - 3x - 4x + 12 = 0 \\ x(x - 3) - 4(x - 3) = 0 \\ (x - 3)(x - 4) = 0 \\ x - 3 = 0 \\ x = 3 \\ x - 4 = 0 \\ x = 4$