Question

if a+b=5,ab=2 then (a-b)^2=​

Answer 1

Answer:

25/9

Step-by-step explanation:

a+b=5...............................(1)

ab=2

b=a/2

put in (1)

so

a+a/2=5

2a+a/2=5

a=10/3

so,      b=10/3(1/2)

b=5/3

So,(a-b)^2=(10/3-5/3)^2

=(5/3)^2

=25/9

Answer 2

Answer:

the answer is 17

Step-by-step explanation:

(a+b)^2 = 5^2

a²+b²+2ab = 25

a²+b²+2*2 =25

a²+b² = 25-4

a² + b² = 21

now put the value

(a-b)^2 = a²+ b²-2ab

(a-b)² = 21-4

(a+b)² = 17

hope it helps you