kazmgirl kazmgirl

19-03-2021
Mathematics

contestada

find the value of a2+b2 and a4+b4 when a+b=5 and ab =4

Respuesta :

thebecks thebecks

19-03-2021

Answer:

a² + b² = 17

a^4 + b^4 = 257

Step-by-step explanation:

The only solutions for a+b=5 and ab =4 is:

4 and 1 but we don't know which is which. In this case it doesn't matter though.

a² + b² = 16 + 1 = 17

a^4 + b^4 = 256 + 1 = 257

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