High School

Take \( f \) and \( g \) to be the polynomials given by:

\[ f(x) = 70x^4 - 3x^3 - 196x^2 + 9x + 124 \]

\[ g(x) = -10x^2 - x + 15 \]

Identify polynomials \( q \) and \( r \) such that:

\[ f(x) = q(x)g(x) + r(x) \]

Answer :

Polynomials are q(x) = 6x² - x and r(x) = 90x⁴ + 39x³ + 3 so that f(x)=q(x)g(x)+r(x).

Let's perform the polynomial long division to divide f(x) by g(x):

Given:

f(x) = (6x² - x) . g(x) + (90x⁴ + 39x³ + 3)

g(x) = -10x² - x + 15

We'll perform the division f(x)/g(x). Here's how it's done:

6x - 1

________________________________________________________

-10x² - x + 15 | 90x⁴ + 39x³ + 3

-(90x⁴ + 9x³ - 135x²)

___________________________

30x³ + 135x² + 3

-(30x³ + 3x² - 45x)

__________________

138x

-(138x - 13.8)

___________

13.8

So, after performing the division, we get:

q(x) = 6x - 1

r(x) = 90x⁴ + 39x³ + 3

Therefore, q(x) = 6x² - x and r(x) = 90x⁴ + 39x³ + 3.

Complete question is:

Take f and g to be the polynomials that are given by f(x)=70x⁴-3x³-196x²+9x+124 and g(x)=-10x²-x+15. Identify polynomials q and r so that f(x)=q(x)g(x)+r(x). q(x)=|6x²-x || r(x)=