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Fanamaria258go
Respondido


[tex] {4x}^{2} + 9= 12x[/tex]
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Resposta :

Summer1967go

[tex]4x {}^{2} + 9 = 12x \\ [/tex]

[tex]4x {}^{2} + 9 = 12x = 0[/tex]

[tex]4x {}^{2} - 12x + 9 = 0[/tex]

[tex](2x - 3 ){}^{2} = 0[/tex]

[tex]2x - 3 = 0[/tex]

[tex]2x = 0[/tex]

[tex]2x = 3[/tex]

[tex]x = \frac{3}{2} [/tex]

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