divide the polynomial p(X)=4x^3-8x^2+8x-1 by the polynomial g(X)=2x^2-3x+2. find the quotient and the remainder. pls answer this question step by step.
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Answered by
11
p(x) = 4x^3-8x^2+8x-1
q(x) =2x-1
r(x) =x+3
f(x) -g(x) ×q(x) +r(x)
degree of g(x) is 2 ....
f(x) = 4x3 + 8x2 + 8x + 7, g(x)= 2x2 – x + 1
f(x) = 4x3 + 8x2 + 8x + 7 and g(x)= 2x^2-x+1...
2x^2-x+1√4x^3+8x^2+8x+7= 2x+5
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4x^2-2x^2+2x
_______________
10x^2+6x+7
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10x^2-5x+5
_______________
11x+12
_________________
Thus q(x) = 15x +10 and r(x) = 3x-32
Hope I help you❤❤......
Answered by
8
Here is Your answer...❤
Let f(x)=4x 3
−8x 2 +8x+1
q(x)=2x−1
r(x)=x+3
f(x)=g(x)×q(x)+r(x)
Degree of g(x) be 2. as degree of f(x) is 3.
∴g(x)=ax
2 +bx+c
4x 3 −8x
2 +8x+1=(ax
2 +bx+c)(2x−1)+x+3
=2ax 3 +2bx 2 +2cx−ax 2
−bx+c+x+3
=2ax 3 +(2b−a)x 2
+(2c−b+1)+(3−c)
Equating coefficient of power of x,
2a=4⇒a= 24
=2
2b−a=−8⇒b=−3
2c−b+1=8
⇒2c+3=7
⇒c=2
∴g(x)=2x
2
−3x+2
Hope it helps..
Please Mark branilest Answer...❤
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