jpickney66
jpickney66 jpickney66
  • 14-01-2020
  • Mathematics
contestada

Factoring Quadratic Expressions.?
i need help asap
x2 – 7x – 18

Respuesta :

jimrgrant1 jimrgrant1
  • 14-01-2020

Answer:

(x - 9)(x + 2)

Step-by-step explanation:

Given

x² - 7x - 18

Consider the factors of the constant term (- 18) which sum to give the coefficient of the x- term (- 7)

The factors are - 9 and + 2, since

- 9 × 2 = - 18 and - 9 + 2 = - 7, thus

x² - 7x - 18 = (x - 9)(x + 2)

Answer Link

Otras preguntas

Case 1: ‘Students' agency in an out-of-classroom setting: Acting accountably in a gardening project’. An article by Marjaana Kangas, Olli Vesterinen, Lasse Lip
Which sentence includes a detail that shows the historical background of the setting? my great-aunt lived in a cabin in the foothills of the rocky mountains for
Help!! Biology A 30 Ptss!!
Suppose there is a river on which are located several micro-beweries, each of which discharges pollutants into the water. suppose somebody invents a new technol
what is the molecular weight of ammonia​
At what amount are mineral deposits and gas reserves recorded in the accounts?​
4(2*2 + 3) - 2*2 = -(3*2 - 1) + 29
What is the major advantage to having a home equity line of credit HELOC )?
Which is not the precursor for the de novo purine biosynthesis?
The Renaissance in Europe saw a rebirth of which two cultures?