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Nagaland Class 9 Answered

If (x+2)  is a factor of x²-2ax²-5x+6a, then find the value of a
Asked by tovitact | 21 Mar, 2019, 08:43: PM
answered-by-expert Expert Answer
f(x) = x3 -2a x2 -5x +6a
 
if (x+2) is a factor, then f(-2) = 0
 
f(-2) = -8 -2a (-2)2 -5(-2) + 6a = 2 - 2a = 0 
 
hence a = 1
Answered by Thiyagarajan K | 21 Mar, 2019, 10:12: PM

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Nagaland 9 - Maths
If (x+2)  is a factor of x²-2ax²-5x+6a, then find the value of a
Asked by tovitact | 21 Mar, 2019, 08:43: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
Nagaland 9 - Maths
find the value of 1/(1³+2³+3³) –³/2
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Asked by Sachinsingh0045 | 13 Feb, 2019, 07:53: PM
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Nagaland 9 - Maths
Find the vaue of k, if x-1 is a factor of p(x) in each of the following cases           Q1. P(x) =x square+x+k  
Asked by Sg900266 | 12 Feb, 2019, 08:12: PM
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