marichuysandoval marichuysandoval
  • 02-11-2020
  • Mathematics
contestada

Solve this quadratic: 2x^2 – 5x – 7 = 0

Respuesta :

Vitapinkk Vitapinkk
  • 02-11-2020

Answer:

Step-by-step explanation:

2x^2-5x-7=0

2x^2+2x-7x-7=0

2x(x+1)-7(x+1)=0

(x+1)(2x-7)=0

  • X+1=0⇒x=-1
  • 2x-7=0⇒x=7/2
Answer Link

Otras preguntas

What is the common difference of an arithmetic sequence defined by the formula an=2n−4?
what effect did the eastern front have on world war I
HELP PLEASEEE!!!!! SCHOOL START TOMORROW. NUMBER 21 and 22 ONLY
Which of the following is right ?
Read the text that Marcia sent to a friend. I had to come up with a service project as part of my grade in social studies, so I did a food drive in the spring.
PLEASE ANSWER ASAP *picture attached*
Water is considered a _______ resource. Oil, coal, and natural gas are considered _______ resources. _______ energy is able to be replaced within the ecosystem
Can someone help me in this plssss I really need it
Factor the binomial or identify it as prime. 2z4 – 2 A. 2(z2 + 1)(z2 – 1) B. 2(z2 + 1)(z – 1)(z + 1) C. Prime D. 2(z2 + 1)2
Which of the following words best describes the Pardoner's treatment of the Host? a. angry c. uneducated b. generous d mocking