algazali44al algazali44al

13-10-2019
Mathematics

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y = 4x + 5
y = x2 + 12x + 20

Respuesta :

aduntide aduntide

13-10-2019

Step-by-step explanation:

[tex]y = 4x + 5 \\ y = 2x + 12x + 20 \\ 4x + 5 = 12x + 2x + 20 \\ 4x - 12x - 2x = 20 - 5 \\ - 10x = 15 \\ - x = \frac{15}{10} \\ x = - \frac{3}{2} [/tex]

[tex]x = - \frac{3}{2} \\ 4( - \frac{3}{2} ) + 5 = y \\ - 6 + 5 = y \\ y = - 1[/tex]

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