X2-4x=177 (the 2 is an exponent)

x² - 4x = 177

x² - 4x - 177 = 0

x = - (-4) + / - √ ((-4) ² - 4 (1) (-177))

2 (1)

x = 4 + / - √ (16 + 708)

2

x = 4 + / - √ (724)

2

x = 4 + / - 2√ (181)

2

x = 2 + √ (181)

x = 2 + √ (181) x = 2 - √ (181)