No. 7-2=5 and 2-7= -5. So 7-2= positive 5 and 2-7= negative 5.
I assume you're asking to find the coefficient of the
term in the expansion of
.
The binomial theorem says that the expansion itself is
and we obtain the
term when
. So the coefficient of this term would be
Use an equation of ratios to solve this:
12 cm 9 cm
---------- = ---------
x 8 cm
Cross multiplying, 9x = 96, and x = 32/3 cm (10 2/3 cm).
Im pretty sure its 1.0296 multiplied by 10 to the tenth power