7 Si a+b=5 y ab =2,calcula el valor de
[tex] {a}^{2} + {b}^{2} [/tex]
[tex] {a}^{2} + {b}^{2} [/tex]
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Verified answer
Respuesta:
a+b=5
ab=2
Explicación paso a paso:
(a+ b)²= a²+2ab +b²
5²≈ a² +2.2 +b²
25= a² +4 + b²
25-4 = a²+b²
21 =a²+b²
Respuesta:
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Explicación paso a paso: