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Wags
Mathematics
11 January, 11:10
X2 - 12x + 27 = 0 Solutions: x = and x =
+5
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2
)
Carlo Brewer
11 January, 11:24
0
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
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Rodolfo
11 January, 11:24
0
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
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