CBSE Class 10 Answered
Solve these que plz fast
Asked by Syedjunidali036 | 12 Jun, 2020, 08:05: PM
Expert Answer
The polynomial P(x) = 3x3 + 8x2 + ax - 2 has factor (x+2)
As (x+2) is a factor of P(x)
Using factor theorem, we have
P(-2) = 0
3(-2)3 + 8(-2)2 + a(-2) - 2 = 0
3(-8) + 8(4) - 2a - 2 = 0
-24 + 32 - 2a - 2 = 0
32 - 26 = 2a
2a = 6
a = 3
Answered by Renu Varma | 13 Jun, 2020, 03:55: PM
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