shornoramiller3 shornoramiller3

12-06-2014
Mathematics

contestada

9x^2+5x-1=0 use quadratic formula to solve for x

Respuesta :

konrad509 konrad509

12-06-2014

[tex] 9x^2+5x-1=0\\ \Delta=5^2-4\cdot 9\cdot (-1)=25+36=61\\ \sqrt{\Delta}=\sqrt{61}\\ x_1=\frac{-5-\sqrt{61}}{2\cdot9}=-\frac{5+\sqrt{61}}{18}\\ x_2=\frac{-5+\sqrt{61}}{2\cdot9}=-\frac{5-\sqrt{61}}{18} [/tex]

Answer Link

Otras preguntas

I want to know how many bricks and cement it would take to build the following brick wall: the bricks are 16 inches by 8 inches, and the wall would measure 6 ft

Find the standard equation of the circle that satisfies the conditions. Center (-1,-3), passing through the point (3,0)

Find the area of a regular hexagon with the given measurement 48-inch perimeter A = sq. in.

How do you compute the intercepts of a quadratic function?

what is the working procedure of electric geyser

An employee is paid $11.25 per hour for the first 40 hours and $16 for each additional hour. During the first week on the job, the employee's gross pay was $62

If y varies directly with x and x=4 when, y=20, find k, the constant of variation.

speeding peeling out or weaving through traffic are examples of

100 96 104 88 120 56 what is the next number in this series of numbers?

2x-y=4 find the slope of the graph