diamondspark290 diamondspark290
  • 16-11-2020
  • Mathematics
contestada

Find the value of a² + b² , when a+ b = 8 and ab = 12

Respuesta :

preciousdada1765
preciousdada1765 preciousdada1765
  • 16-11-2020

Answer:

Step-by-step explanation:

6+2=8

6*2=12

[tex]6^{2}[/tex] +[tex]2^{2}[/tex]= 36+4=40

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prisha4princess
prisha4princess prisha4princess
  • 16-11-2020

Answer:

Here,

a2 +b2=(a+b)

[tex]a {}^{2} + b {}^{2} = (a + b) {}^{2} - 2ab[/tex]so,

[tex](8) {}^{2} - 2 \times 12[/tex]

[tex]64 - 2 \times 12[/tex]

[tex]40[/tex]

Step-by-step explanation:

So,

Therefore,

[tex]a {}^{2} + b {}^{2} = 40[/tex]

I'm not sure if this is correct or not, but this the way I learned..

Answer Link

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