melaniecarbajal14
melaniecarbajal14
13-01-2019
Mathematics
contestada
2x^2+3x-1=4 what is this ?
Respuesta :
carsondenise
carsondenise
13-01-2019
x= -5/2 or -2.5, 1
————
Move the constant to the left
2x^2+ 3x-1-4=0
Bust the b
2x^2+ 5x -2x-1-4=0
2x^2+ 5x -2x-5=0
Factor out the expression
x(2x+5) -1(2x+5)=0
Factor out 2x+5
(x-1)(2x+5)=0
When the product of factors equal 0, at least one factor IS 0
2x+5=0
x-1=0
Solve
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