cheergirl21 cheergirl21

17-09-2017
Mathematics

contestada

How can I solve this equation 5x^2-2x-6=-2x^2+9x

Respuesta :

kphung76127 kphung76127

17-09-2017

Add 2x^2 to both sides
7x^2-2x-6=9x

Subtract 9x from both sides
7x^2-11x-6=0

Factor by using slip and slide
x^2-11x-42
(x-14)(x+3)
(x-14/7)(x+3/7)
(x-2)(7x+3)

Then use the Zero Product Property to find roots
x-2=0
x=2

7x+3=0
7x=-3
x=-3/7

Final answer: x=-3/7, x=2

Answer Link

Otras preguntas

Five times the sum of a number and seven is thirty. find the number.

A positron has the same mass as an electron.When a positron is accelerated from rest between two points at a fixed potential difference,it acquires a speed that

A Narrative Statement illustrates how your life will look when you reach a goal. True False

What is the term for the beliefs, values, behavior, and material objects that together make up the total way of life shared by members in a society?

Explain which aquatic environment are more likely to have winter ice

What was the relationship between Indians and The Maryland Colony?

I will mark you bainly. please help! :D

Two innovations that helped the railroads grow were?

Why does the Antarctic experience different temperatures than the Arctic?

The set of possible values of m is {5,7,9}. What is the set of possible values of k if 2k=m+3