Question

7x+x (x-7)=(2x+5)(5-2x) Алгебра помогите паж

Answer 1

7x+x²-7x=10x-4x²+25-10x
5x²=25
x²=5
x1=√5, x2=-√5

Answer 2

I can help you with algebra problems. Here is the detailed solution for your equation:

First, we simplify the left side by distributing the 7x and adding the x terms:

$$7x + x + (x - 7) = 9x - 7$$

Then, we simplify the right side by multiplying the binomials using the FOIL method:

$$(2x + 5)(5 - 2x) = 10x - 4x^2 + 25 - 10x = -4x^2 + 25$$

Next, we set the equation equal to zero by subtracting the right side from the left side:

$$9x - 7 - (-4x^2 + 25) = 0$$

$$4x^2 + 9x - 32 = 0$$

Finally, we solve for x by using the quadratic formula:

$$x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$$

$$x = \frac{-9 \pm \sqrt{9^2 - 4(4)(-32)}}{2(4)}$$

$$x = \frac{-9 \pm \sqrt{561}}{8}$$

Therefore, the solutions are:

$$x = \frac{-9 + \sqrt{561}}{8} \approx 1.28$$

$$x = \frac{-9 - \sqrt{561}}{8} \approx -6.28$$

I hope this helps you understand how to solve this type of equation. If you have any other questions, feel free to ask me.Ответь+подробно.+7x+x+(x-7)=(2x+5)(5-2x)+Алгебра+помогите+паж