Answer :
ax² + bx + c = 0
2x² + x - 3 = 0
2x² + x + (-3) = 0
x = -b +/- √b² - 4ac
2a
x = 1 + /- √1² - 4(2)(-3)
2(2)
x = 1 + /- √1 +24
4
x = 1 +/- √25
4
x = 1 + /- 5
4
x = 1 + 5 x = 1 - 5
4 4
x = 6 x = -4
4 4
x = 3 x = -1
2
x = 1 1/2
x = 1 1/2 x = -1
2x² + x - 3 = 0
2x² + x + (-3) = 0
x = -b +/- √b² - 4ac
2a
x = 1 + /- √1² - 4(2)(-3)
2(2)
x = 1 + /- √1 +24
4
x = 1 +/- √25
4
x = 1 + /- 5
4
x = 1 + 5 x = 1 - 5
4 4
x = 6 x = -4
4 4
x = 3 x = -1
2
x = 1 1/2
x = 1 1/2 x = -1
