lindseyk1 lindseyk1
  • 13-02-2015
  • Mathematics
contestada

Please solve X^2-14X+48=0 (any method works as long as you show work)

Respuesta :

naǫ
naǫ naǫ
  • 13-02-2015
[tex]x^2-14x+48=0 \\ \\ a=1 \\ b=-14 \\ c=48 \\ b^2-4ac=(-14)^2-4 \times 1 \times 48=196+192=4 \\ \\ x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}=\frac{-(-14) \pm \sqrt{4}}{2 \times 1}=\frac{14 \pm 2}{2}=\frac{2(7 \pm 1)}{2}=7 \pm 1 \\ x=7-1 \ \lor \ x=7+1 \\ x=6 \ \lor \ x=8 \\ \boxed{x=6 \hbox{ or } x=8}[/tex]
Answer Link

Otras preguntas

Why in division there is sometimes remaindres?
Oracle bones were used to predict the future. true or false?
What is the percent decrease from 350 to 70?
All of the following describe a balance sheet except which one? A. The balance sheet reflects the results of multiple transactions. B. The balance sheet contain
Lindy earns $6.00 per hour.How many hours will she work to earn $168?
Evaluate the expression 5(4)^2\20+9^2
What is the difference between inductive and deductive reasoning?
What event occurred that led to the weakening of Mikhail Gorbachev's authority as leader of the Soviet Union?
What is one disadvantage of the global economy for American workers?
"Find the missing side lengths in each pair of similar figures." Someone explain please