I need the crt ans using division algorithm plzz the final ans is k=5,a=-5
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x^2 - 4x + 8 - k
---------------------------------------------------------
x^2 - 2x + k) x^4 - 6x^3 + 16x^2 - 25x + 10
x^4 - 2x^3
---------------------------------------------------------
-4x^3 + 16x^2 - kx^2 - 25x + 10
- 4x^3 + 8x^2 - 4kx
----------------------------------------------------------------
8x^2 - kx^2 - 25x + 4kx + 10
8x^2 - 16x + 8x
-------------------------------------------------------------------
- kx^2 - 9x + 4kx + 10 - 8k
- kx^2 + 2kx -k^2
------------------------------------------------------------------------
-9x + 2kx + 10 - 8k + k^2
---------------------------------------------------------------------------
We got the remainder as (-9 + 2k)x + (10 - 8k + k^2).
Given remainder is x + 1.
Comparing coefficients, we get
-9 + 2k = 1
2k = 10
k = 5.
Now,
10 - 8k + k^2 = a
10 - 8(5) + (5)^2 = a
10 - 40 + 25 = a
-30 + 25 = a
a = -5.
Therefore a = -5 and k = 5.
Hope this helps!
---------------------------------------------------------
x^2 - 2x + k) x^4 - 6x^3 + 16x^2 - 25x + 10
x^4 - 2x^3
---------------------------------------------------------
-4x^3 + 16x^2 - kx^2 - 25x + 10
- 4x^3 + 8x^2 - 4kx
----------------------------------------------------------------
8x^2 - kx^2 - 25x + 4kx + 10
8x^2 - 16x + 8x
-------------------------------------------------------------------
- kx^2 - 9x + 4kx + 10 - 8k
- kx^2 + 2kx -k^2
------------------------------------------------------------------------
-9x + 2kx + 10 - 8k + k^2
---------------------------------------------------------------------------
We got the remainder as (-9 + 2k)x + (10 - 8k + k^2).
Given remainder is x + 1.
Comparing coefficients, we get
-9 + 2k = 1
2k = 10
k = 5.
Now,
10 - 8k + k^2 = a
10 - 8(5) + (5)^2 = a
10 - 40 + 25 = a
-30 + 25 = a
a = -5.
Therefore a = -5 and k = 5.
Hope this helps!
sowmiya8:
tq
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