02-11-2014
Mathematics

contestada

2b^2+4b–2=0 what is the answer?

Respuesta :

konrad509 konrad509

02-11-2014

[tex]2b^2+4b-2=0\\ 2(b^2+2b-1)=0\\ 2(b^2+2b+1-2)=0\\ 2((b+1)^2-2)=0\\ 2(b+1)^2-4=0\\\ 2(b+1)^2=4\\\ (b+1)^2=2\\ b+1=-\sqrt2 \vee b+1=\sqrt2\\ b=-1-\sqrt2 \vee b=-1+\sqrt2 [/tex]

Answer Link

Otras preguntas

Which of the following could not be found on George h. . Bush's political resume? a. member House of Representatives b. United Nations ambassador c. director of

A low trough is indicative of a serious depression. the start of a depression. a growing recession. the end of a recession.

why did president Andrew Johnson veto the civil rights act of 1868? A. the civil rights act limited the jobs that African Americans could do B. the civil rights

The main difference between a nation and a state is that a nation is an example of an imagined political

Solve each equation: 1.20=4b+7+5 2.7=6k-7k 3.23-2m=3-2(5m-2) 4.-88/45=1/3r+2/5r

The thermal convention that drives plate motion is caused by

The volume of a prism is the product of its height and area of its base, V = Bh. A rectangular prism has a volume of 16y4 + 16y3 + 48y2 cubic units. Which could

In order to become a better writer, you must read a. only novels. b. good writing. c. anything except magazines. d. only nonfiction.

After Soviet postwar actions made it plain that it was trying to expand communist influence, President Harry Truman and his advisors adopted a policy called ___

The sum of three integers is 92. The second number is three times the first number. The third number is ten less than twice the first number. Find the integers.