josh233126 josh233126
  • 15-10-2020
  • Mathematics
contestada

2x2 + 4x — 7 = x2 – 2x

Respuesta :

mathstudent55
mathstudent55 mathstudent55
  • 15-10-2020

Answer:

x = -7 or x = 1

Step-by-step explanation:

2x^2 + 4x - 7 = x^2 - 2x

x^2 + 6x - 7 = 0

(x + 7)(x - 1) = 0

x + 7 = 0  or  x - 1 = 0

x = -7 or x = 1

Answer Link

Otras preguntas

Find two consecutive positive odd integers whose product is 35??
How many times can 3 go into 8
How are atoms in a compound held together?
why is 1/6 greater than 1/8 but less than 1/3
How many times can 3 go into 8
A student who weighs 500 newtons climbed the stairs from the first floor to the third floor,15 meters above, in 20 seconds. How much work did she do
Suppose that as the result of extensive pollution to the ocean, kelp forests are killed. Explain how this would affect not only kelp populations, but also many
Tim works part time at a retail store. His salary varies directly by the number of hours worked. Last week he arned $99.45 for 13 hours of work. This week he ea
Please help me on #37. I know for A you would use the quadratic equation but I got the wrong answer.
Compare the element hydrogen with the alkali metal sodium