Question

$2 {x}^{2} - 11x + 15$
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Answer 1

Answer:

x = 3 or 2.5

Step-by-step explanation:

The given equation --------> 2x²-11x+15

That is in the form of

ax²+bx+c

Here ,

a = 2

b = -11

c = 15

Formula for finding x ,

X = -b +/- √ b²-4ac

-------------------------------

2a

Here ,

x = -(-11) +/- √ (11)²-4(2)(15)

-----------------------------------

2(2)

= 11 +/- √121 - 120

----------------------------

4

= 11 +/- √1

--------------

4

that means x = 11+1/4 or 11-1/4

= 3 or 2.5

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