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5. ¿Cuál de los siguientes números no es solución de la inecuación?4x² + 13 2 5x²-3?b.-2c.3d.-5a.-3

User MiGo
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\begin{gathered} \text{ 4(-3)}^2\text{ + 13 }\ge5(-3)^2\text{ - 3} \\ \text{ 4(9) + 13 }\ge\text{ 5(9) - 3} \\ \text{ 36 + 13 }\ge\text{ 45 - 3} \\ \text{ 49 }\ge\text{ 42} \end{gathered}

a) -3 is a solution of the inequality


\begin{gathered} \text{ 4(-2)}^2\text{ + 13 }\ge5(-2)^2\text{ - 3} \\ \text{ 4(4) + 13 }\ge\text{ 5(4) - 3} \\ \text{ 16 + 13 }\ge\text{ 20 - 3} \\ \text{ 29 }\ge\text{ 17} \end{gathered}

b) -2 is a solution


\begin{gathered} \text{ 4(3)}^2\text{ + 13 }\ge5(3)^2\text{ - 3} \\ \text{ 4(9) + 13 }\ge\text{ 5(9) - 3} \\ 36\text{ + 13 }\ge\text{ 45 - 3} \\ \text{ 49 }\ge\text{ 42} \end{gathered}

c) 3 is a solution of the inequality


\begin{gathered} \text{ 4(-5)}^2\text{ + 13 }\ge5(5)^2\text{ - 3} \\ 4(25)\text{ + 13}\ge5(-5)^2\text{ - 3} \\ \text{ 100 + 13 }\ge\text{ 5(25) - 3} \\ \text{ 113 }\ge\text{ 125 - 3} \\ \text{ 113 }\ge\text{ 122} \end{gathered}

d) -5 is not a solution of this inequality

User Styrr
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