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Alja [10]
3 years ago
7

If (a^3+27)=(a+3)(a^2+ma+9) then m equals

Mathematics
1 answer:
Ronch [10]3 years ago
7 0

Answer:

m = - 3

Step-by-step explanation:

a³ + 27 ← is a sum of cubes and factors in general as

a³ + b³ = (a + b)(a² - ab + b²), thus

a³ + 27

= a³ + 3³

= (a + 3)(a² - 3a + 9)

comparing a² - 3a + 9 to a² + ma + 9, then

m = - 3

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