How do you find the quotient of (x^3 + 4x -7) by x-3?
2 Answers
Explanation:
"one way is to use the divisor as a factor in the numerator"
"consider the numerator"
color(red)(x^2)(x-3)color(magenta)(+3x^2)+4x-7
=color(red)(x^2)(x-3)color(red)(+3x)(x-3)color(magenta)(+9x)+4x-7
=color(red)(x^2)(x-3)color(red)(+3x)(x-3)color(red)(+13)(x-3)color(magenta)(+39)-7
=color(red)(x^2)(x-3)color(red)(+3x)(x-3)color(red)(+13)(x-3)+32
"quotient "=color(red)(x^2+3x+13)," remainder "=32
Really this is the same as Jim's solution. It just looks different.
Explanation:
Note that I am using a place keepers