Inverse Operation

10/7/2015

THE MOST IMPORTANT ALGEBRA SKILL YOU WILL EVER NEED!

Mr Bigsby

10/8/2015 07:01:35 am

Taking viewer requests!
Leave a problem you would like to see solved and I'll pick one for the next video. Rational numbers only and one variable (it can have multiple X's but not X's and Y's).

Natalie Tario

10/8/2015 12:24:02 pm

Avery Worsham

10/8/2015 12:29:46 pm

if you used pemdas the regular way would you get the same answer or would it change

Mr. Bigsby

10/8/2015 02:44:26 pm

It would not be correct. If I had divided by 5 first, 57/5 is 11.4 then if I add the 13 is becomes 24.4 which is not the correct x value.

REVERSE PEMDAS!

Autumn Doyle

10/8/2015 12:49:36 pm

-45= -4x + 12

Mr Bigsby

10/8/2015 02:46:18 pm

-45= -4x + 12
-12 -12
-57 = -4x
/-4 /-4
14.25 = x

Ray Sutton

10/8/2015 12:58:16 pm

21x+-12

Mr. Bigsby

10/8/2015 02:46:52 pm

You need an equal sign to make it an equation.

Angie L.

10/8/2015 01:12:33 pm

-3y+7=-8

Mia Williams

10/8/2015 01:14:10 pm

Hello!

tapasya

10/8/2015 01:29:24 pm

Inverse operation is doing Pemdas backwards, right?

Mr. Bigsby

10/8/2015 02:48:27 pm

Inverse Operation is the process of applying an opposite operation to an equation to isolate the variable. It is performed in the reverse order of PEMDAS.

Ashton

10/8/2015 01:38:49 pm

Hello

Krista Martin

10/8/2015 02:16:04 pm

-54=12x+-9

George Clooney's Bush is his front yard.

10/8/2015 02:53:20 pm

Why is the MEP SAD?

Scott Talley

10/10/2015 10:35:30 am

The MEP is not SAD, the SAD is MEP. Whatever that implies.

Jaden ZImmerman

10/13/2015 06:54:20 pm

forgot to sign my name at the end :P

Tapasya Ray

10/8/2015 04:45:15 pm

-16x+3= -4

The Mysterious Guy Nobody Knows

10/8/2015 04:48:32 pm

1'm back aga1n!
You st1ll hav3 no 1d3a about who 1 am MUAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHA!

I'm-totally-NOT-Emmett I-mean-who-would-think-that-if-they-do-they-are-an-idiot heheheheheheheh......

Emmett

10/8/2015 04:50:01 pm

What was that last part about? Everyone already knows it's Scott.

The Mysterious Guy Nobody Knows

10/8/2015 04:50:47 pm

SSSSSSSSSHHHHHHHHHH! Don't blow my cover!!!

Scott

10/10/2015 10:33:41 am

Emmett, I said it was you, not me.

Emmett

10/8/2015 05:00:05 pm

15xxxxxxxxxxx=4.72

XD

Mr. Bigsby

10/10/2015 01:32:43 pm

"x" is being multiplied eleven times so you you write x to the 11th power.
15x^11
First we inverse the multiply 15 by dividing both sides by 15.
x^11 = 4.72/15
Then inverse the exponent. The inverse operation of an exponent is a root so you would have to apply the 11th root to both sides. On the left it will cancel leaving x and on the right side we have the 11th root of 4.72/15. Whatever that equals, I would need a graphing calculator to answer that!

The mysterious man that answers all questions and nobody knows

10/19/2015 01:10:52 pm

The answer is 0.90022292248148!
Easy with a calculator.

Jordan Christian

10/8/2015 05:44:52 pm

Nice

Scott Talley

10/10/2015 10:37:17 am

434343434434343x / 10x + 22222 = 1

Mr. Bigsby

10/10/2015 01:36:38 pm

You have an "x" being divided by itself so that would cancel itself. This means that the left side of your equation must equal 1 regardless of what x equals. If your equation is truly equal, x = all real numbers.

But 434343434434343x / 10x = 43434343443434.3
and 43434343443434.3 + 22222 does not equal 1 so this equation is not valid.

Cora C.

10/12/2015 12:46:45 pm

10x+30=100

Emmett

10/19/2015 01:12:23 pm

The answer is 7

Victoria

10/12/2015 12:51:31 pm

Kate

10/14/2015 06:30:43 pm

The way i was taught was instead of using pemdas do the first one that is farther away from the x

jacob

10/19/2015 01:18:29 pm

Sean

10/26/2015 04:09:14 pm

Great explanation

Hayden

10/27/2015 12:04:19 pm

Josie

11/2/2015 07:41:50 pm

I understand it

Inverse Operation

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