Respuesta:
A)
[tex]x^3 = 27\\\\\sqrt[3]{x^3} = \sqrt[3]{27}\\\\x = 3[/tex]
Comprobación
[tex]x^3 = 27\\\\3^3 = 27\\\\27 = 27[/tex]
B)
[tex]\sqrt[3]{x} = 4\\\\(\sqrt[3]{x} )^3 = (4)^3\\\\ x = 64\\\\[/tex]
[tex]\sqrt[3]{x} = 4\\\\\sqrt[3]{64} = 4\\\\4 = 4[/tex]
C)
7x + 12 = 5x + 20
7x - 5x = 20 - 12
2x = 8
x = 8/2
x = 4
7(4) + 12 = 5(4) + 20
28 + 12 = 20 + 20
40 = 40
D)
-5x - 10 = -10x + 40
-5x + 10x = 40 + 10
5x = 50
x = 50/5
x = 10
-5(10) - 10 = -10(10) + 40
-50 - 10 = -100 + 40
-60 = -60
Explicación paso a paso:
ez
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Respuesta:
A)
[tex]x^3 = 27\\\\\sqrt[3]{x^3} = \sqrt[3]{27}\\\\x = 3[/tex]
Comprobación
[tex]x^3 = 27\\\\3^3 = 27\\\\27 = 27[/tex]
B)
[tex]\sqrt[3]{x} = 4\\\\(\sqrt[3]{x} )^3 = (4)^3\\\\ x = 64\\\\[/tex]
Comprobación
[tex]\sqrt[3]{x} = 4\\\\\sqrt[3]{64} = 4\\\\4 = 4[/tex]
C)
7x + 12 = 5x + 20
7x - 5x = 20 - 12
2x = 8
x = 8/2
x = 4
Comprobación
7x + 12 = 5x + 20
7(4) + 12 = 5(4) + 20
28 + 12 = 20 + 20
40 = 40
D)
-5x - 10 = -10x + 40
-5x + 10x = 40 + 10
5x = 50
x = 50/5
x = 10
Comprobación
-5x - 10 = -10x + 40
-5(10) - 10 = -10(10) + 40
-50 - 10 = -100 + 40
-60 = -60
Explicación paso a paso:
ez