ginanobles68 ginanobles68

28-04-2021
Mathematics

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What is the positive solution to this equation? 4x^2+ 12x = 135 Record your answer and fill in the bubbles on your answer document.

Respuesta :

gayanepoghosyan gayanepoghosyan

28-04-2021

Answer:

[tex]\frac{9}{2} or 4.5[/tex]

Step-by-step explanation:

4x^2+ 12x = 135

D=b²−4ac=122−4(4)(−135)=144+2160=2304=48²

[tex]x_{p}= \frac{-12+48}{8} =\frac{36}{8}=\frac{9}{2}=4.5[/tex]

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