00:01
Ok, the first step here is change the whole thing to standard form, which means this format, 5x squared, take the 13x to the left -hand side, take the 6 to the left -hand side, leaving zero on the right.
00:18
It's now in the form of ax squared plus bx plus c equals zero.
00:26
That's called standard form.
00:28
Now, this i want to factorize, two brackets.
00:36
There's no choice about the first one, 5x and x is the only way to get 5x squared, 5x times x.
00:45
We have a minus sign and a plus sign here that indicates that both signs here must be minus.
00:55
And then we have the choices here.
00:57
To get 6, it could be, for example, 1, 6.
01:01
That won't work because we have 30x here and 1x here...