Question

a-b=4 এবং ab=16 হলো a+b এর মান নিচয় কর​

Answer 1

Answer:

given,

a -b = 4 , ab = 16

to find: a+ b = ??

using,

(a +b)² = (a - b)² + 4ab

= 4² +4*16

= 16 + 64

=80

=> a+b = √80 = 4√5

so, the value of a + b is 5√5.