Hilton Warner
10/12/2023 · High School
\( \left\{ \left. \begin{array} { l } { 3 x - y = - 10 } \\ { x ^ { 2 } + y = 10 } \end{array} \right. \Rightarrow \right. \)
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Система уравнений:
\[
\begin{cases}
3x - y = -10 \\
x^2 + y = 10
\end{cases}
\]
Нам нужно найти решение этой системы уравнений.
Solve the system of equations by following steps:
- step0: Solve using the substitution method:
\(\left\{ \begin{array}{l}3x-y=-10\\x^{2}+y=10\end{array}\right.\)
- step1: Solve the equation:
\(\left\{ \begin{array}{l}y=10+3x\\x^{2}+y=10\end{array}\right.\)
- step2: Substitute the value of \(y:\)
\(x^{2}+10+3x=10\)
- step3: Cancel equal terms:
\(x^{2}+3x=0\)
- step4: Factor the expression:
\(x\left(x+3\right)=0\)
- step5: Separate into possible cases:
\(\begin{align}&x=0\\&x+3=0\end{align}\)
- step6: Solve the equation:
\(\begin{align}&x=0\\&x=-3\end{align}\)
- step7: Calculate:
\(x=0\cup x=-3\)
- step8: Rearrange the terms:
\(\left\{ \begin{array}{l}x=0\\y=10+3x\end{array}\right.\cup \left\{ \begin{array}{l}x=-3\\y=10+3x\end{array}\right.\)
- step9: Calculate:
\(\left\{ \begin{array}{l}x=0\\y=10\end{array}\right.\cup \left\{ \begin{array}{l}x=-3\\y=1\end{array}\right.\)
- step10: Calculate:
\(\left\{ \begin{array}{l}x=-3\\y=1\end{array}\right.\cup \left\{ \begin{array}{l}x=0\\y=10\end{array}\right.\)
- step11: Check the solution:
\(\left\{ \begin{array}{l}x=-3\\y=1\end{array}\right.\cup \left\{ \begin{array}{l}x=0\\y=10\end{array}\right.\)
- step12: Rewrite:
\(\left(x,y\right) = \left(-3,1\right)\cup \left(x,y\right) = \left(0,10\right)\)
Решение системы уравнений:
\[
\begin{cases}
3x - y = -10 \\
x^2 + y = 10
\end{cases}
\]
Решение системы уравнений:
\[
(x, y) = (-3, 1) \cup (x, y) = (0, 10)
\]
Таким образом, система уравнений имеет два решения: \((-3, 1)\) и \((0, 10)\).
Quick Answer
Решения системы уравнений: \((-3, 1)\) и \((0, 10)\).
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