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-x^2+5x
-3x+19
3x-15
4
(x-5)(x-3)+4=x^2-3x-5x+15+4=x^2-8x+19
b).(4x^2+13x+7):(x+2)=4x+5
-4x^2-8x
5x+7
-5x-10
-3
(x+2)(4x+5)-3=4x^2+5x+8x+10-3=4x^2+13x+7
d).(3x^4-2x^3-x^2+x):(x-1)=3x^3+x^2+1
-3x^4+3x^3
x^3-x^2
-x^3+x^2
x
-x+1
1
(x-1)(3x^3+x^2+1)+13x^4+x^3+x-3x^3-x^2-1+1=3x^4-2x^3-x^2+x
^ potęga