Respuesta:
[tex]4 {x}^{2} - 9 = 7 \\ 4 {x}^{2} = 7 + 9 \\ 4 {x}^{2} = 16 \\ x ^{2} = \frac{16}{4} \\ x^{2} = 4 \\ {x} = \sqrt{4} \\ x = 2[/tex]
Explicación paso a paso:
espero haberte ayudado
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Respuesta:
[tex]4 {x}^{2} - 9 = 7 \\ 4 {x}^{2} = 7 + 9 \\ 4 {x}^{2} = 16 \\ x ^{2} = \frac{16}{4} \\ x^{2} = 4 \\ {x} = \sqrt{4} \\ x = 2[/tex]
Explicación paso a paso:
espero haberte ayudado