Question

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Answer 1

Resposta:

4x igual a menos 2

Explicação passo-a-passo:

x elevado a 2 +2x igual a 4x e 0-2 igual a -2

Answer 2

Resposta:

x=−(2)±(2)2−4×(1)×(−2)−−−−−−−−−−−−−−−−−−√2×(1)⇔

x=−2±4−(−8)−−−−−−−−√2⇔

x=−2±12−−√2⇔

x=−2+3.46412∨x=−2−3.46412⇔

x=1.46412∨x=−5.46412

S={0.7321,−2.7321}

Explicação passo-a-passo:

https://www.matematica.pt/util/calculadora-equacao-2-grau.php