Respuesta :
Answer:
Step-by-step explanation: x = 9
x = 3
Step by step solution :
Step 1 :
Trying to factor by splitting the middle term
1.1 Factoring x2-12x+27
The first term is, x2 its coefficient is 1 .
The middle term is, -12x its coefficient is -12 .
The last term, "the constant", is +27
Step-1 : Multiply the coefficient of the first term by the constant 1 • 27 = 27
Step-2 : Find two factors of 27 whose sum equals the coefficient of the middle term, which is -12 .
-27
+
-1
=
-28
-9
+
-3
=
-12
That's it
Answer:
Step-by-step explanation:
x² – 12x + 27 = 0
x² –9x -3x + 9*3 = 0
x(x-9) -3(x -9) = 0
(x-9)(x-3) = 0
x - 9 = 0 ; x - 3 = 0
x = 9 ; x = 3
x = 9 or 3