Question

a+b=1 and a-b =7 find: a^2+b^2 and ab

Answer 1

Step-by-step explanation:

here is ur answer.....

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Answer 2

Step-by-step explanation:

a+b=1 (1)

a-b=7 (2)

On adding eq (1) and (2) we get,

a =4

Now putting the value of a in eq (1), we get:-

b= - 3

Now,

a^2 + b^2 = 16 + 9 = 25

And

ab = - 12