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4 years ago

11

Joline is solving the equation 0 = x2 – 5x – 4 using the quadratic formula. Which value is the negative real number solution to

her quadratic equation? Round to the nearest tenth if necessary. Quadratic formula: –5.7 –4 –1 –0.7

1 answer:

Tomtit [17]4 years ago

6 0

Answer:

-5.7

Step-by-step explanation:

OUR EQUATION IS A QUADRATIC EQUATION

Let Δ be our dicriminant :

a= 1
b= 5
c= -4
Δ= 5²-4*1*(-4) =25 +16 =41≥0
so we have two solutions x and y
x= (-5-√41)/2 = -5.7

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