Question

What are the approximate solutions of 2x2 + x = 14, rounded to the nearest hundredth?

x ≈ -2.41 and x ≈ 2.91
x ≈ -2.91 and x ≈ 2.41
x ≈ -5.82 and x ≈ 4.82
No real solutions

Answer 1

@Mehek14

Answer 2

Bring 14 to the left:

2x² + x - 14 = 0

The quadratic formula is x = (-b ± √(b² - 4ac))/2a. The quadratic equation is ax² + bx + c = 0.

Furthermore, by using the formulas here, we have:

a = 2
b = 1
c = -14

x = (-1 ± √(1² - 4(2)(-14)))/2(2)
x = (-1 ± √(1 + 112))/4
x = (-1 ± √(113))/4

By calculator, we have:

x ≈ 2.41 and x ≈ -2.91

Answer 3

so b

Answer 4

right @Mehek14 ????????

Answer 5

yea
i was just checking to see if it's correct

Answer 6

ok