AyannaDixon25 AyannaDixon25

23-04-2017
Mathematics

contestada

Solve the equation.
[tex] \sqrt{12-5x} [/tex] = 5x

a. 3/5
b. -4/5
c. 3/5, 4/5
d. -3/5

Respuesta :

23-04-2017

(12-5x)^(1/2)=5x

12-5x=25x^2

25x^2+5x-12=0

25x^2+20x-15x-12=0

5x(5x+4)-3(5x+4)=0

(5x-3)(5x+4)=0

x= -4/5 and 3/5

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ghanami ghanami

23-04-2017

hello here is a solution :

Ver imagen ghanami

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