goldendina13 goldendina13

04-10-2020
Mathematics

contestada

Find the value of a2 + b2 when a+b= 6 and ab = 7

Find the value of a2 b2 when ab 6 and ab 7 class=

Respuesta :

jimrgrant1 jimrgrant1

04-10-2020

Answer:

a² + b² = 22

Step-by-step explanation:

(a + b)² = a² + 2ab + b² ← substitute a + b = 6 and ab = 7

6² = a² + 2(7) + b²

36 = a² + 14 + b² ( subtract 14 from both sides )

22 = a² + b²

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