carlylemorel1 carlylemorel1

21-05-2021
Mathematics

contestada

Which statement about f(x) = 2x2 – 3x - 5 is true?

Which statement about fx 2x2 3x 5 is true class=

Respuesta :

26-05-2021

Answer:

-1, 5/2 ; f(x) = (x+1)(2x-5)

Step-by-step explanation:

2x² - 3x - 5 = 0

2x² - 5x + 2x - 5 = 0

x(2x - 5) +1(2x - 5) = 0

Factors are :

(2x - 5) = 0 ; (x + 1) = 0

2x - 5 = 0

2x = 5

x = 5/2

(x + 1) = 0

x = - 1

Zeros are ; x = 5/2 and x = - 1

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