Plantear ecuaciones:
a) x² - 1 = 16. 3
b) (x + 1)² = 81
c) x³ / 2 = 108
Resolución:
a) x² - 1 = 16. 3
x² - 1 + 1 = 48 + 1
[tex]\sqrt{x^{2} }[/tex] = [tex]\sqrt{49}[/tex]
x = 7
b) (x + 1)² = 81
[tex]\sqrt{(x + 1)^{2} }[/tex] = [tex]\sqrt{81}[/tex]
x + 1 - 1 = 9 -1
x = 8
c) x³ / 2 = 108
x³ / 2. 2 = 108. 2
x³ = 216
[tex]3\sqrt{x^{3}}[/tex] = [tex]3\sqrt{216}[/tex]
x = 6
