Решите уравнение (7+3y-x^2y)*(-2xy)=

<span>Пошаговое:
</span><span><span>(7+3y-x2y)⋅(-2xy)</span><span>=-<span>(7+<span>3y</span>-<span>x2y</span>)⋅2xy</span></span><span>=-(<span>7+<span>(<span>3-x2</span>)y</span></span>)⋅2xy</span><span>=-(<span>7+<span>y(<span>-x2+3</span>)</span></span>)⋅2xy</span><span>=-<span>(<span>y(-x2+3)+7</span>)⋅2xy</span></span><span>=-(<span><span>y(-x2+3)⋅2xy</span>+<span>7⋅2xy</span></span>)</span><span>=<span>-<span>y(-x2+3)⋅2xy</span>-7⋅2xy</span></span><span>=<span>-<span>2yxy(-x2+3)</span>-14xy</span></span><span>=<span>-14xy-2yxy(-x2+3)</span></span></span>