Question

x(x + 9) = (x + 3). (x - 3) =​

Answer 1

Resposta:

-1

Explicação passo-a-passo:

X(x+9)= (x+3). (x-3)

x² +9x = x² -3x +3x -9

x² +9x = x² -9

x²-x² +9x = -9

9x = -9

X= -9/9

x= -1

Answer 2

x(x + 9) = (x + 3) . (x - 3)
X2 + 9X = X2 - 9
9x = -9
X = 1