en

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

x^2+6x=x(x+3)+15

Solution

x^{2} + 6 x = x (x + 3) + 15

Solution

x = 5

Solution steps

x^{2} + 6 x = x (x + 3) + 15

Expand

x (x + 3) : x^{2} + 3 x

x^{2} + 6 x = x^{2} + 3 x + 15

Subtract

x^{2} + 3 x

from both sides

x^{2} + 6 x - (x^{2} + 3 x) = x^{2} + 3 x + 15 - (x^{2} + 3 x)

Simplify

3 x = 15

Divide both sides by

3

x = 5

Popular Examples

7x-(3+4x)=-x+(4-x)

7 x - (3 + 4 x) = - x + (4 - x)

12x^2-1=3x(4x+2)

12 x^{2} - 1 = 3 x (4 x + 2)

- \frac{3}{2} x = 22

11n+5n-1=65n-36

11 n + 5 n - 1 = 65 n - 36

1/2 (6h-4)=-5h+1

\frac{1}{2} (6 h - 4) = - 5 h + 1

Frequently Asked Questions (FAQ)

What is the answer to x^2+6x=x(x+3)+15 ?
The answer to x^2+6x=x(x+3)+15 is x=5
Solve for x: x^2+6x=x(x+3)+15
The solution is x=5