Hi fvaras89
Example
To type square : x^2
To type cube : x^3
or you can learn it here : http://www.mathhelpforum.com/math-he...-tutorial.html
These are hints to help you solve those problems:
1.
2.
Im not too sure how to expand these two expressions
1/ (x+2y)(x-2y)2
2/ (1-x)(1+x+x2+x3)
The small numbers r squared and cubed.. not sure how to use it here
Would be good if you can put steps also so i can understand where it comes from..
Thanks
Hi fvaras89
Example
To type square : x^2
To type cube : x^3
or you can learn it here : http://www.mathhelpforum.com/math-he...-tutorial.html
These are hints to help you solve those problems:
1.
2.
Do you have a text book that you are working from? I doubt your teacher would give you a task if you're not clear.
I'll use songoku's question:
since the power is 2 it's multiplying itself.
for example
=
now we do the same for this..
now we multiply the first number/letter of the first bracket by the first number/letter of the second bracket
now we multiply the first letter of the first bracket by the second number/ letter
now we multiply the second letter/number by the first number of the second bracket
now the last step... yep that's right, the second number/letter of the first bracket by the second number/letter of the second bracket.
do you get the pattern?
Now put them together
simplify..
now that you've learnt how to do it properly now I tell you the shortcut
when you have 2 brackets multiplying each other and they are IDENTICAL. They have to be identical.
The formula:
can be used.. for example:
x will be "a" and 5 will be "b"
now just substitute:
Was that the same answer as before? it sure was.
Do you understand better now?