Sally1768 Sally1768
  • 03-08-2018
  • Mathematics
contestada

State the range of possible values for x if (3x+5)(x-1) < 2x+7

Respuesta :

sarajevo
sarajevo sarajevo
  • 03-08-2018

we are given with the inequality

[tex] (3x+5)(x-1) < 2x+7\\
\\
[/tex]

Open the parenthesis we get on left side we get

[tex] (3x+5)(x-1) < 2x+7 =3x^2-3x+5x-5<2x+7\\
\\
3x^2+2x-5<2x+7\\
\\
\text{Add -2x-7 on both the sides we get}\\
\\
3x^2+2x-5-2x-7<2x+7-2x-7\\
\\
3x^2-12<0\\
\\
\text{Add 12 on both the sides we get}\\
\\
3x^2<12\\
\\
\text{Divide both the sides by 3 we get}\\
\\
x^2<4\\
\\
-2<x<2\\ [/tex]

Answer Link

Otras preguntas

Do you agree or disagree with this following statement? Model trains fascinate everyone—both children and adults. Explain why you voted the way you did.
A circle has a diameter of 10 ft. What is its circumference? Use 3.14 for pie and do not round your answer. Be sure to include the correct unit in your answer.​
Mato is making a leather belt inlaid with beads. On the first day there were b beads on the belt. On the fourth day, there were b³ beads on the same belt. Ther
HELPPP PLS IM GIVING 60 POINTSSSSS IT'S EASYYYYYY 6TH GRADE MATHH
Solve for x. x= x+19 7x+9
Which of the following is irrational?
graphs of what functions? HELP PLSS
Reorganice 4x+2y=8 para que y sea el sujeto.
WILL GIVE BRAINLIEST Write 2/7x(1.4x^2-3.5y) as a polynomial
What is the molarity of a solution that is prepared by adding 3 moles of CaSO4 in 1.5 L of water?