If x-1 is a factor of a^2×x^3 - 3×a×x + 3×a -1 ,find the value of a.
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4
Answer:
a = ±1
Step-by-step explanation:
x - 1 is a factor
x - 1 = 0
x = 1
a²x³ - 3ax + 3a - 1 = 0
Substituting the value of x
0 = a²(1)³ - 3a(1) + 3a - 1
0 = a² - 3a + 3a - 1
a² - 1 = 0
a² = 1
a = ±1
Hope this helps! :)
AccioNerd:
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Answered by
2
Answer:
x-1 is the solution of equation a²x³ - 3ax + 3a -1
it means solution of the p(x) is:
x-1 = 0
x = 1
putting the value of x in given equation gives us
a²(1)³ - 3a(1) + 3a -1
= a² - 3a + 3a -1
= a² - 1
using the identity a²-b²= (a+b)(a-b)
= (a+1)(a-1)
so, a = 1, -1.
hope it helps. kindly mark it brainliest,
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