Question

if a-b=3 and a+b=5 then find ab and a^2+b^2​

Answer 1

Answer:

I hope this is the correct answer

Answer 2

Step-by-step explanation:

a-b=3

a=3+b. -1

a+b=5

sub 1 in eq

3+b+b=5

3+2b=5

2b=5-3

b=1. -2

sub 2 in 1

a=3+1

a=4

therefore ab =4×1=4

a^2+b^2= 4^2+1^2

= 16+1

=17