justinad
justinad
16-02-2017
Mathematics
contestada
I'm not sure how to solve for x
Respuesta :
christinann062
christinann062
16-02-2017
4x(x-2)=(2x+1)(2x-3)
in the first expression distribute the 4x, in the second expression FOIL
4x²-8x=4x²-6x+2x-3
combine like terms
4x²-8x=4x²-4x-3
subtract 4x² from each side
-8x=-4x-3
add 8x to each side
0=4x-3
add 3 to each side
3=4x
divide by 4 on each side
x= 3/4 or 0.75
Answer Link
byeol98
byeol98
16-02-2017
4x(x-2) = (2x+1) (2x-3)
Distributive property: 4x^2 - 8x = 4x^2 - 6x + 2x -3
subtract 4x^2 both side : -8x=-4x-3
+4x +4x
-4x=-3
x= 3/4
Answer Link
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