en

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

x^2-4x-25>20

Solution

x^{2} - 4 x - 25 > 20

Solution

x < - 5 or x > 9

+1

Interval Notation

(- \infty, - 5) \cup (9, \infty)

Solution steps

x^{2} - 4 x - 25 > 20

Rewrite in standard form

x^{2} - 4 x - 45 > 0

Factor

x^{2} - 4 x - 45 : (x + 5) (x - 9)

(x + 5) (x - 9) > 0

Identify the intervals

x < - 5 or x > 9

Popular Examples

2 x^{2} - 11 x = 0

2 (x + 5) - 1 = 2 x

(6(x-11))/5 =(5(x+11))/6

\frac{6 ( x - 11 )}{5} = \frac{5 ( x + 11 )}{6}

simplify 3/6+10/12 simplify

\frac{3}{6} + \frac{10}{12}

simplify-5\sqrt[3]{-500x^5y^3}simplify

Frequently Asked Questions (FAQ)

What is x^2-4x-25>20 ?
The solution to x^2-4x-25>20 is x<-5\lor x>9