What is the answer to (x-18)(x+a)=x^2+72x-18a ?

The answer to (x-18)(x+a)=x^2+72x-18a is x=0

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

(x-18)(x+a)=x^2+72x-18a

(x - 18) (x + a) = x^{2} + 72 x - 18 a

x = 0

Solution steps

(x - 18) (x + a) = x^{2} + 72 x - 18 a

Expand

(x - 18) (x + a) : x^{2} + a x - 18 x - 18 a

x^{2} + a x - 18 x - 18 a = x^{2} + 72 x - 18 a

Move

18 a

to the right side

x^{2} + a x - 18 x = x^{2} + 72 x

Subtract

x^{2} + 72 x

from both sides

x^{2} + a x - 18 x - (x^{2} + 72 x) = x^{2} + 72 x - (x^{2} + 72 x)

Simplify

a x - 90 x = 0

Factor

a x - 90 x : x (a - 90)

x (a - 90) = 0

Using the Zero Factor Principle:

ab = 0

then

a = 0

b = 0

x = 0

x, 4 x = - 4 r + 2 d

x, 5 x - 4 y - 8 = 0

\frac{n + 1}{2} = \frac{3}{4}

\frac{- z}{4} = \frac{- 3}{4}

lo g_{10} (216) = x

What is the answer to (x-18)(x+a)=x^2+72x-18a ?
The answer to (x-18)(x+a)=x^2+72x-18a is x=0