Question

uyuu, LUI
Vis al lavolal
9. The following identities hold for positive real numbers a and b
ſa
1 Sab=da ſo
ii)
Vь
(680)
6 V6
a
)
m (va + 16)(va - Vb) = a -b iv) (a+Vb)(a - Vb) =a? - b
v (Va+15) = a +2/ab + b
ſa-b
0. To rationalise the denominator of
1
we multiply this by​

Answer 1

Answer:

The mass number, also called atomic mass number or nucleon number, is the total number of protons and neutrons in an atomic nucleus. It is approximately equal to the atomic mass of the atom expressed in atomic mass units.