Answer :
x² + 18x + 79 = 0
x = -(18) +/- √((18)² - 4(1)(79))
2(1)
x = -18 +/- √(324 - 316)
2
x = -18 +/- √(8)
2
x = -18 +/- 2√(2)
2
x = -9 + √(2)
x = -9 + √(2) x = -9 - √(2)
x = -(18) +/- √((18)² - 4(1)(79))
2(1)
x = -18 +/- √(324 - 316)
2
x = -18 +/- √(8)
2
x = -18 +/- 2√(2)
2
x = -9 + √(2)
x = -9 + √(2) x = -9 - √(2)