Answer :
7x² + 20x - 3 = 0
x = -(20) +/- √((20)² - 4(7)(-3))
2(7)
x = -20 +/- √(400 + 84)
14
x = -20 +/- √(484)
14
x = -20 +/- 22
14
x = -20 + 22 x = -20 - 22
14 14
x = 2 x = -42
14 14
x = ¹/₇ x = -3
x = -(20) +/- √((20)² - 4(7)(-3))
2(7)
x = -20 +/- √(400 + 84)
14
x = -20 +/- √(484)
14
x = -20 +/- 22
14
x = -20 + 22 x = -20 - 22
14 14
x = 2 x = -42
14 14
x = ¹/₇ x = -3
