Question

5x²+20x = 18x + 720 +2x​

Answer 1

Explicación paso a paso:

[tex]5 {x}^{2} + 20x = 18x + 720 + 2x \\ [/tex]

[tex]5 {x}^{2} + 20x =20x + 720[/tex]

[tex]5 {x}^{2} + 20x - 20x = 720[/tex]

[tex]5 {x}^{2} = 720[/tex]

[tex] {x}^{2} = 720 \div 5[/tex]

[tex] {x}^{2} = 144[/tex]

[tex]x = \sqrt{144} [/tex]

[tex]x = 12[/tex]