In steps explain how to work 100x^2+180x+81

100x² + 180x + 81

100x² + 90x + 90x + 81

(10x + 9) (10x + 9)

or

100x² + 180x + 81 = 0

x = - 180 + / - √ (180² - 4 (100) (81))

2 (100)

x = - 180 + / - √ (32400 - 32400)

200

x = - 180 + / - √ (0)

200

x = - 180 + / - 0

200

x = - 180

200

x = - 9/10