Solving Quadratic Equations by Completing the Square

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Solving Quadratic Equations By Completing The Square | Algebra II | Khan Academy

I hate math, why do i have to study it WHY

2:50 is it 2ax = – 4x or – 2ax = – 4x ?

The only reason I still like math my teachers are o useless ily Khan academy

So Easy lol

Why can’t you just convert it to standard form, and then use the quadratic formula?

Thanks!

Hey really help with stuff that I am struggling with

How come you stuck a four in that gap instead of dragging the neg five there? Totally don’t understand this.

so why is the “2ax” magically not negative since it has negative sign infront of it? Can anyone explain please.

Where does the +/- come from @4:10? Many thanks

THANK YOU!!!! This helped me study for my test

This says algebra 2 . So I’ve been taking algebra 2 things in 8th grade… wow I’m so mad rn

8th grade algebra sucks. But you made me understand a lot more thank you

Hello, and thank you in advance if anybody responds. And peace to all. I am taking a union apprenticeship test tomorrow basis of which is basic algebra, and geometry. i.e. linear distance from fraction to decimal and vice versa. Add/Subtraction unlike terms. Factoring Quad equations and solving quad.following a given formula.

As far as the geometry its radius, circumference, arc Lengths, parallel lines and transversals. Math was once effortless for me as i see it now in my girls 18,11,6.. Ya i know pray for me.. haha.

very helpful

Whoaaaa I need that online graphing calculator… **0**

at 5:20 why did (x-5)(x+1) get become x=5 and x=-1 and not x=-5 and x=1 like in the problem?

Why was someone with a NAZI handle critiquing others for being unkind? I had to report him.

Thanks for saving my bum sir

Thank you so much! I knew how to complete the square already but when it got to the harder equations with negatives, fractions and whole number coefficients as the a value I started to struggle. I’ve been looking forever for a video that shows how to do hard problems but all the videos i found used very simple numbers and did awful jobs at explaining. Thank you so much this helped a lot!!! Please continue to make videos that incorporate hard and strange numbers so that viewers can actually see how mathematicians work their way around the large numbers and not just the basics.