If x^3 +3ax - 2a has a factor x-2 the find the value of a
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Hi friend
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your answer
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(x³ + 3ax - 2a ) has a factor (x - 2).
To find : - a = ?
Let , p(x) = x³ + 3ax - 2a
x - 2 = 0
=> x = 2
Then,
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p(2) = (2)³ + 3 × a × 2 - 2a = 0
=> 8 + 6a - 2a = 0
=> 4a = - 8
=> a = - 8/4
=> a = - 2
HOTE IT HELPS
--------------
your answer
---------------------
(x³ + 3ax - 2a ) has a factor (x - 2).
To find : - a = ?
Let , p(x) = x³ + 3ax - 2a
x - 2 = 0
=> x = 2
Then,
-----------
p(2) = (2)³ + 3 × a × 2 - 2a = 0
=> 8 + 6a - 2a = 0
=> 4a = - 8
=> a = - 8/4
=> a = - 2
HOTE IT HELPS
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