Factorise x^2 -2xy +y^2 -a^2 -2ab -b^2
(Absurd answers will be hanged and crucified. TWICE!)​

( x − y + a + b ) ( x − y − a − b )

Step-by-step explanation:

I hope that I will not end up crucified :(

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents

y = 2x

step-by-step explanation:

if you divide each number in the sequence, you'll see that they all have a multiple factor of 2. each number in the series, and any other numbers which may continue, will be multiplied by 2. therefore, y is the next number in the sequence, and x is the current one, so, our formula will be y = 2x.