What are the solutions to the equation completesquare r^2-2r ?

The solutions to the equation completesquare r^2-2r are (r-1)^2-1

Find the zeros of completesquare r^2-2r

The zeros of completesquare r^2-2r are (r-1)^2-1

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

complete the square

r^{2} - 2 r

(r - 1)^{2} - 1

Solution steps

r^{2} - 2 r

Write

r^{2} - 2 r

in the form:

x^{2} + 2 a x + a^{2}

2 a = - 2 : a = - 1

Add and subtract

(- 1)^{2}

r^{2} - 2 r + (- 1)^{2} - (- 1)^{2}

x^{2} + 2 a x + a^{2} = (x + a)^{2}

r^{2} - 2 r + (- 1)^{2} = (r - 1)^{2}

(r - 1)^{2} - (- 1)^{2}

Simplify

(r - 1)^{2} - 1

x^{2} - 7 x + 120 = 0

x, f = (x + h)^{2}

x^{2} + x + 2 = 2

x^{2} + x + 2 = 8

4 x^{2} - 12 x + 9 = 0

What are the solutions to the equation completesquare r^2-2r ?
The solutions to the equation completesquare r^2-2r are (r-1)^2-1
Find the zeros of completesquare r^2-2r
The zeros of completesquare r^2-2r are (r-1)^2-1