Solve x2-14x+21=0 by completing the square

Question

08-05-2014
Mathematics

Answered

IDNLearn.com offers a unique blend of expert answers and community-driven knowledge. Join our knowledgeable community and get detailed, reliable answers to all your questions.

Solve x2-14x+21=0 by completing the square

Sagot :

We value your participation in this forum. Keep exploring, asking questions, and sharing your insights with the community. Together, we can find the best solutions. Your questions deserve reliable answers. Thanks for visiting IDNLearn.com, and see you again soon for more helpful information.

Solve The Question Posetd In The Screenshot

Determine The Amount Of Debt And The Balance On The Trial Balance Given The Following:- Capital: \[tex]$45,000 - Debtors: ? - Creditors: \$[/tex]1,500- Stock: \

A Researcher Wants To Investigate The Relationship Between Age And Memory Performance. They Collect Data From Participants Of Different Age Groups At A Single P

Select All That Apply:Which Three Elements Should Be Included In A Speech Bibliography?A. Websites VisitedB. Interviews And Field Research ConductedC. Relevant

How To Turn Off Find My Iphone From Another Device?

Select The Correct Answer.Which Of The Following Lines Reveals That Lubin Has Developed Hope For Finding Love Again?A. "No, Let Her Go Her Way And Wed Her Fancy

Find The Solution(s) To [tex][tex]$x^2 - 16x + 64 = 0$[/tex][/tex].A. [tex][tex]$x = 4$[/tex][/tex] And [tex][tex]$x = 16$[/tex][/tex] B. [tex][tex]$x = 8$[/te

The Length Of A Rectangle Was Reduced From 15 Cm Down To 3 Cm. What Is The Reduction FactorK? 

What Point On The Number Line Is [tex]\frac{1}{4}[/tex] Of The Way From The Point 0 To The Point -3?A. [tex]-0.25[/tex]B. [tex]-0.5[/tex]C. [tex]-0.75[/tex]D. [

The Table Shows Information About Four Students Who Are Running Around A Track.Motion Of Students\begin{tabular}{|l|l|l|}\hline\multicolumn{1}{|c|}{ Student Nam

Анонимidn Анонимidn · Answer 1 · 2014-07-26T08:38:14-04:00

Анонимidn Анонимidn

26-07-2014

[tex]x^2-14x+21=0\\\\x^2-2x\cdot7+7^2-7^2+21=0\\\\(x-7)^2-49+21=0\\\\(x-7)^2-28=0\\\\(x-7)^2=28\iff x-7=-\sqrt{28}\ \vee\ x-7=\sqrt{28}\\\\x=7-\sqrt{4\cdot7}\ \vee\ x=7+\sqrt{4\cdot7}\\\\x=7-2\sqrt7\ \vee\ x=7+2\sqrt7[/tex]

Answer Link

Sagot :

Other Questions