Question

15-4x+x^2=7x^2+2x+15

Answer 1

Ответ:

15 убираем т. к в сумме все равно получается 0

-4х+х^2=7х^2+2х

-7х^2+х^2=4х+2х

-6х^2=6х

-х^2=х

или -х

или -х^2

Answer 2

-4x+x^2=7x^2+2x

-4x+x^2-7x^2-2x=0

-6x+x^2-7x^2=0

-6x-6x^2=0

-6x(1+x)=0

x(1+x)=0

x=0

1+x=0

x=0

x=-1

x1=-1

x2=0

Answer 3

To solve the equation 15 - 4x + x^2 = 7x^2 + 2x + 15, we need to rearrange it into a quadratic equation and then solve for x. Let's begin:

First, simplify both sides of the equation: x^2 - 7x^2 + 2x - 4x + 15 - 15 = 0

Combining like terms: -6x^2 - 2x = 0

Now, let's factor out an x from the equation: x(-6x - 2) = 0

To find the values of x, we need to solve the following two equations:

1. x = 0
2. -6x - 2 = 0

For equation 1), x = 0 is one solution.

For equation 2): -6x - 2 = 0 -6x = 2 x = 2/(-6) x = -1/3

Therefore, the solutions to the equation 15 - 4x + x^2 = 7x^2 + 2x + 15 are x = 0 and x = -1/3.