It's quite simple really :)
What do 10 and 15 have in common? 5.
10 / 5 = 2
15 / 5 = 3
So you times 2 by 5 to get 10, and 3 by 5 to get 15!
Put 5 outside the brackets, and then put the two numbers inside the brackets. Since it's 10x, you know you will have to write 2x inside the brackets, and since it's -15, you have to write -3 (not +3!)
So the answer would be: 5(2x-3)
Check it by solving the equation - multiplying out of the brackets :)
Factorise fully is when brackets are involved in the equation
m(g-a)
In the same way that you would factorise any other expressions that do not contain an equality sign depending on the expressions of which none have been given.
5(3-2x)
What about it? Factorise it?
150 150
150
650
Factorise fully is when brackets are involved in the equation
1x150 2x75 3x50 5x30 6x25 10x15
a²-a = a(a-1)
To factorise is to find the numbers that divide into the original number by only using prime numbers. For example factorise 20 = 2 times 2 times 5
1x150, 2x75, 3x50, 5x30, 6x25, 10x15
to put into brackets
you do (245x)
The answer will depend on where the brackets are. In general the solution would be to expand all the brackets, combine like terms and then factorise.
150. 10 feet times 15 feet is 150 feet.