2x squares plus 5x plus 9 equals 0 using quadratic formula

x = -  + i   or     -  -   i

x  = -1.25 + 3.43 i     or   - 1.25 - 3.43 i

Step-by-step explanation:

solve 2x² + 5x + 9 = 0  using quadratic formula

The quadratic formula is;

x = -b ±√b² - 4ac   / 2a

a = 2       b = 5    and     c= 9

We can now proceed to insert the values into the formula;

x = -5 ± √5² - 4(2)(9)   /   2(2)

x = -5±√25 -72  /  4

x = -5 ± √-47   / 4

x = -  ± .

But = i

x = -  ± . i

 =-  ± i

x = -  + i   or     -  -   i

x  = -1.25 + 3.43 i     or   - 1.25 - 3.43 i

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