Question

solve for x

5x^2-x-4=0

Answer 1

Answer:

x = -5/4    x=1

Step-by-step explanation:

5x^2 -x -4 =0

Factor

(5x+4) (x-1)=0

Using the zero product property

5x+4 =0  x-1 =0

5x=-4       x=1

x = -5/4    x=1

Answer 2

Answer:

x = -0.8, 1

Step-by-step explanation:

5x² - x - 4 = 0

5x² - 5x + 4x - 4 = 0

5x(x - 1) + 4(x - 1) = 0

(5x + 4)(x - 1) = 0

x = -⅘, 1