Question

If (a+b) =361 and = -120. calculate the value of a2+b2.​

Answer 1

Answer:

a-b =3

a^2+b^2 =29

(a-b)^2 =a^2+B^2–2 ab

(3)^2 =29–2 ab

9 =29–2 a b

9–29 =-2 a b

-20 =-2 a b

2 a b =20

a b =20/2 =10

( substitute the value of 2 ab then 3^2 =29–10*2 =9)

Step-by-step explanation:

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