zhada
zhada
30-07-2017
Mathematics
contestada
Can someone please help me solve 91
Respuesta :
konrad509
konrad509
30-07-2017
[tex]3x^3+7x^2-20x=0\\ x(3x^2+7x-20)=0\\ x(3x^2-5x+12x-20)=0\\ x(x(3x-5)+4(3x-5))=0\\ x(x+4)(3x-5)=0\\ x=0 \vee x=-4 \vee x=\dfrac{5}{3}[/tex]
Answer Link
irspow
irspow
30-07-2017
3x^3+7x^2-20x=0 factor out x first
x(3x^2+7x-20)=0
x(3x^2+12x-5x-20)=0
x(3x(x+4)-5(x+4))=0
x(3x-5)(x+4)=0
x={-4, 0, 5/3}
Answer Link
VER TODAS LAS RESPUESTAS ( 61+ )
Otras preguntas
Chan hee bought 3.4 pounds that cost 6.95 per pound how much did he spend on coffee?
A sport or activity in which the goal is hit a target from far away
what is half of earths surface called
Which one of the following is a correct example of the plural possessive case? a. woman's plans b. it's place c. stone's throw d. men's plans
The most highly populated country in west Asia
Suppose a bill arrives on the desk of the president of the United States. It originated in the Senate. He decides on a pocket veto. This will be possible for hi
Five cities south of 30n and west of 15e
Germany is the seventh largest European country and is slightly smaller by area than Montana. Germany has a land area of 134,835 square miles and a water area o
Y=x-2 a. (3,1) b. (1,3)
if the difference a number and four is tripled, the result is six less than the number. Find the number.