Question

10y-4y(5+9y)=(7-6y)(6y +7) кто может решить​

Answer 1

Ответ:y=-4,9

Объяснение:

10y-20y-36y=42y+49-36y-42y

10y-20y-36y-42y+36y+42y=49

-10y=49

y=-4,9

Answer 2

Solving the Equation

To solve the equation 10y-4y(5+9y)=(7-6y)(6y+7), we can follow these steps:

1. Expand and simplify the equation. 2. Solve for the variable y.

Step 1: Expand and Simplify the Equation

First, let's expand and simplify the given equation:

10y-4y(5+9y)=(7-6y)(6y+7)

Expanding the terms gives:

10y - 20y - 36y^2 = 42y + 49 - 42y - 42y^2

Simplifying further, we get:

-46y - 36y^2 = 49 - 42y - 42y^2

Step 2: Solve for the Variable y

Now, let's solve for the variable y:

Combining like terms, we get:

-82y - 36y^2 = 49 - 42y - 42y^2

Bringing all terms to one side of the equation, we have:

0 = 91 - 40y - 6y^2

This is a quadratic equation in the form ax^2 + bx + c = 0. We can solve for y using the quadratic formula:

y = (-b ± √(b^2 - 4ac)) / (2a)

By substituting the values of a, b, and c from the equation 0 = 91 - 40y - 6y^2, we can find the solutions for y.

This is the detailed process to solve the given equation. If you need further assistance with the quadratic formula or solving quadratic equations, feel free to ask!

[[1]](https://www.mathway.com/ru/popular-problems/Precalculus/475198)