Question

How do you solve x(x-1)=4x

Answer 1

one solution, if x not equal to 0, can be solved by dividing off an x

Answer 2

if you know one solution, the other can be gotten by a variety of methods.

Answer 3

Open the brackets/parenthesis like this.

x(x-1)=4x
x2 - x = 4x

Now bring them down to 2 terms.
You'll get a quadratic equation!

Understood till here? :D

Answer 4

Ok so you have x2-5x=0

Answer 5

Then what you cannot factor

Answer 6

Awesome.


Now factorize this.

What do you get?

Answer 7

x(x-5) = 0

That IS factorization.

Answer 8

Yes!!!!

Answer 9

Thanks

Answer 10

x(x-1) = 4x ; x=0 is an obvious solution (id hope)

x-1 = 4 , provides the other solution

Answer 11

Got it 0 and 5

Answer 12

Thus as x2-5x is a quadratic equation.
It'll have 2 roots.

So
x2-5x = 0

x can be 0
OR it can be
x-5 = 0/x
x = 5


So FINALLY.

x = 0,5

Understood? :)

Answer 13

Zero is not a possibility

Thank you for your help

Answer 14

:)