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ddd [48]
2 years ago
6

Solve the system of equations. y=4x+5y=x2+12x+20

Mathematics
1 answer:
Viefleur [7K]2 years ago
3 0

Answer:

 \begin{pmatrix}x=-3,\:&y=-7\\ x=-5,\:&y=-15\end{pmatrix}\\

Step-by-step explanation:

\begin{bmatrix}y=x^2+12x+20\\ y=4x+5\end{bmatrix}

\mathrm{Subtract\:the\:equations}

y=x^2+12x+20

y-y=x^2+12x+20-\left(4x+5\right)

\mathrm{Simplify}

0=x^2+8x+15

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