zabid20tiger
zabid20tiger
01-06-2018
Mathematics
contestada
Factor completely
9-6a-24a^2
Respuesta :
mkryukova19
mkryukova19
01-06-2018
-24a²- 6a +9 = - 3(8a² +6a - 9)
8a² +6a - 9 =0
x=(-b +/-√(b² - 4ac))/2a
x = (-6 +/-√(36+4*8*9) /(2*8) = (-6 +/-√(324) /16 = (-6 +/-18)/16
x1 = (-6 +18)/16 = 0.75
x2 = (-6 -18)/16 = - 1.5
-24a²- 6a +9 = - 3(8a² +6a - 9) =
-3(a - 0.75)(a + 1.5)
Answer Link
kws65411
kws65411
11-09-2020
-3 (2a - 1) (4a + 3)
Answer Link
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