Question

If(a+b)=2and(a-b)=10,find the value of (a^2+b^2),ab

Answer 1

Step-by-step explanation:

a+b=2

a-b=10

add the two equations

2a=12

a=6

now substitute a value in any of the equation

we get b=- 4

a^2+b^2= 6^2+(-4)^2

=52

ab=6×-4=-24