Question

If a - b = 3 and a2 + b2 = 29, find the value of ab. 1 point

Answer 1

hi..

here is your step by step answer

a - b =3

a^2 + b^2=29

we know that

(a-b)^2 = a^2 + b^2 - 2ab

so,,

(3)^2 = 29 - 2ab (because a - b =3 and a^2 + b^2 =29)

9 = 29 -2ab

2ab = 29 - 9

2ab = 20

therefore.... ab = 10

hope this helps you..

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