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morpeh [17]
3 years ago
13

What are the roots of the polynomial equation? x2−12x−64=0

Mathematics
2 answers:
Elodia [21]3 years ago
8 0
Answer:  " x = 16 ;  - 4 " .
_____________________________
<u>Note</u>:
______________________________
-16 , +4  = -12 .

-16 * 4 = -64
______________________________
(x - 16)(x + 4) = 0 ; 
______________________________
x = 16 ;  - 4 .
_____________________________
Mariana [72]3 years ago
8 0
X² -12x -64=0
D=b² - 4ac=144+4*64=400

x=(-b+/-√D)/2a

x=(12+/-20)/2
x1=32/2=16
x2=-8/2= -4
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