Question

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

Answer 1

Answer:

sorry I didn't know your answer

Answer 2

Answer:

b=-45√5

Step-by-step explanation:

(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

Hopes it help you♥️♥️