Question

Solve the following equation
correct to 2 decimal
place: 2x2² -5x-4=0
decimal​

Answer 1

Answer:

approx. 3.14 and -0.64

Please mark me as brainiest. Thanks! :)

Step-by-step explanation:

I could use the quadratic formula

a= 2

b=-5

c=-4

-b±√b^2-4ac/2a

-(-5)±√-5^2-4(-8)/2*2

(5±√25+32)/4

(5±√57)/4

(5±7.54983443527)/4

(5+7.54983443527)/4 and (5-

7.54983443527)/4

12.5498344353/4 and -2.54983443527/4

= 3.13745860882 and -0.63745860881( I did not approximate until the final answer)

approx. 3.14 and -0.64