How do you divide (x^4 + x^3 +1x -1 )/ (x^2 + 1)x4+x3+1x−1x2+1?
1 Answer
Aug 29, 2017
Explanation:
"one way is to use the divisor as a factor in the numerator"one way is to use the divisor as a factor in the numerator
"consider the numerator"consider the numerator
color(red)(x^2)(x^2+1)color(magenta)(-x^2)+x^3+x-1x2(x2+1)−x2+x3+x−1
=color(red)(x^2)(x^2+1)color(red)(+x)(x^2+1)cancel(color(magenta)(-x))-x^2cancel(+x)-1
=color(red)(x^2)(x^2+1)color(red)(+x)(x^2+1)color(red)(-1)(x^2+1)cancel(color(magenta)(+1))cancel(-1)
"quotient "=color(red)(x^2+x-1)," remainder "=0
rArr(x^4+x^3+x-1)/(x^2+1)=x^2+x-1