Question

find the value of a and b 4+3√5/4-3√5=a-b√5

Answer 1

(4+3√5)×(4-3√5)=a+b√5

using identity: (a+b)(a-b)= a^2-b^2

a=4

b=3√5

= (4)^2 - (3√5)^2=a+b√5

= 16 - (9×5)=a+b√5

= 16 - 45= a+b√5

=so.. a=16

b=-45√5

hope it helps... :)

Answer 2

Answer: a =16

b = 45√5

Step-by-step explanation: mark me as brainliest