Question

Решите систему уравнений. х^2 +ху=7 (х +у)^3=-8 Решение пожалуйста уровня 8 класса.

Answer 1

(x+y)^3=-8
x+y=-2
y=-2-x
x^2-2x-x^2=7
-2x=7
x=-3,5
y=-2+3,5
y=1,5
(-3,5;1,5)

Answer 2

Solving the System of Equations

To solve the system of equations x^2 + xy = 7 and (x + y)^3 = -8, we can use the substitution method. Let's solve it step by step.

First, let's solve the equation x^2 + xy = 7 for y: y = (7 - x^2) / x.

Now, substitute the value of y into the second equation (x + y)^3 = -8: (x + (7 - x^2) / x)^3 = -8.

Simplify the equation and solve for x. After finding the value of x, substitute it back into the equation y = (7 - x^2) / x to find the value of y.

Let's proceed with these steps to find the solution.