herlima herlima

17-10-2015
Mathematics

contestada

If f(x)=2x^2 +4 and g(x)=x-3,which number satisfies f(x)=(f•g) (x)

Respuesta :

konrad509 konrad509

17-10-2015

[tex](f\cdot g)(x)=f(x)\cdot g(x)\\\\ (f\cdot g)(x)=(2x^2+4)(x-3)\\ (f\cdot g)(x)=2x^3-6x^2+4x-12\\\\ 2x^2+4=2x^3-6x^2+4x-12\\ 2x^3-8x^2+4x-16=0\\ 2x^2(x-4)+4(x-4)=0\\ (2x^2+4)(x-4)=0\\ 2(x^2+2)(x-4)=0\\ \boxed{x=4}[/tex]

Answer Link

Otras preguntas

Factor the following binomial: 3x^2+13x+12 a.3x + 1)(x + 12) b.(2x + 5)(x + 2) c.(4x + 3)(x + 4) d.(3x + 4)(x + 3)

What is the slope of the graph of y = 5x - 6?

Please Help, If You Can, Thank You! There's 2 Answers

Find the slope between (-4,1) and (-2,-2)

what is the difference in the way that a scientist and a historian use time periods?

hi! can someone help me how to write the following in standard form. thank you :) 3 x 10^9 3 x 10^6 3 x 10^3 3 x 10^0 3 x 10^(-3) 3 x 10^(-6)

Given that J is between H and K. If JK=3x-1, HJ=2x+4, and HK=12, find x and JK.

i need help 3/4 as a decimal pls help

What did Christian humanists and Italian humanists have in common? Check all that apply.

The table of values shown below represents a linear function. Which of these points could also be an ordered pair in the table, and why?