The distribution is very simple. Using FOIL.
It states that 
.
Also note that when multiplying expressions we multiply variables and values differently. If we have variables like 
their exponents will add. If we have values like 3 we multiply them normally.
For example your practise 3.
Now just order the expressions from bigger exponent to smaller and than values. (Usual notation although no need).
And solution is:
Hope this helps.
r3t40
Answer:
x=2
Step-by-step explanation:
If 3x + y = 7, then y= 7 - 3x.
Substitute in x - 2y = 0
So:
x - 2(7-3x)=0
x-14+6x=0
7x=14
x=2
M - 536 <== ur expression
when the mass is 781 grams...
781 - 536 = 245
so the mass of the package is 781....and when it is reduced by 536 grams, it equals 245 grams
Answer:
THE CORRECT ANSWER IS D " THE THEORETICAL PROBABILITY OF PULLING A BLUE PEN BASED ON THE EXPECTED FREQUENCY WILL GET CLOSER TO 1/2 AS THE NUMBER OF TRIALS INCREASES. "
