Question

x²-14x-77 factorize​

Answer 1

x ² - 14x - 77

r + s = 14

rs = - 77

r = 7 - u

s = 7 + u

( 7 - u ) ( 7 + u ) = - 77

49 - u² = - 77

- u² = - 77 - 49 = - 126

u² = 126

u = √ 126 = √ 126

r = 7 - √ 126 = - 4.225

s = 7 + √ 126 = 18.225