Question

find the value of a-b then a+b=7 and ab=6​

Answer 1

a+b=7=-b/a

ab=6=c/a

so, b=-7 and a=1

a-b=1-(-7)=8

a-b=8

Answer 2

Solving by eliminating method

We have (a)square+(b)square=?

a+b=6. (1)

a-b=4. (2)

By solving we get 2a=10

Then, a=10/2

A=5

Substitute a=5 in(1) or (2)

Then a=1

Then ,b=4-a. From. Equation (2)

Then b= 3

Now,,(a)square+(b)square=1square+3square

=1+9

=10

;;;therefore the value of a square plus bsquare is 10//