jtmartin9165 jtmartin9165

20-09-2020
Mathematics

contestada

Solve the equation. Check your solutions when necessary.

2x² − 7x = 4

Respuesta :

hayahaitham05 hayahaitham05

20-09-2020

Answer:

x= -1/2 = -0.500

x=4

Step-by-step explanation:

2x^2-7x-4=0

2x^2-8x+1x-4=0

2x(x-4)+1(x-4)=0

(2x+1)(x-4)=0

2x+1=0...2x= -1.. x= -1/2 x-4=0 .. x=4

checking the solution

2(-1/2)^2-7(-1/2)=4..... 4=4

2(4)^2-7(4)=4....... 4=4

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