194k views
4 votes
25x^2+1=5 quadratic

User Fseee
by
7.0k points

1 Answer

6 votes
25x² + 1 = 5

25x² + 1 - 5 = 0

25x² - 4 = 0 By difference of two squares

(5x)² - (2)² = 0

(5x - 2)(5x + 2) = 0

5x - 2 = 0 or 5x + 2 = 0

5x = 0 + 2 5x = 0 - 2

5x = 2 5x = -2

x = 2/5 x = -2/5

x = 0.4 x = -0.4


x = + 0.4 or -0.4
User Sombir Kumar
by
7.9k points