Respuesta:
Explicación paso a paso:
a) 3x²+2=5x
[tex]3x^{2}+2-5x= 0[/tex]
[tex]3x{2}-5x +2 = 0[/tex]
[tex]3x{2}- 2x - 3x + 2 = 0[/tex]
x × [tex](3x-2) - 3x+2 = 0[/tex]
[tex](3x-2) x (x-1) = 0[/tex]
[tex]3x-2 = 0\\x- 1 = 0[/tex]
[tex]x = \frac{2}{3} \\x- 1 = 0[/tex]
b) (5x-2)²-(3x + 1)² = x² +60
[tex]25x^{2} - 20x+ 4 - (9x{2}+6x+1)= x^{2} + 60[/tex]
[tex]25x^{2} -20+4- 9x{2} -6x -1= x^{2} +60[/tex]
[tex]16x^{2} -26x+3- x^{2} -60 =0[/tex]
[tex]15x^{2} +19x-45x-57=0[/tex]
x x [tex](15x+19) -3 (15x19)= 0[/tex]
[tex]15x+19= 0\\x-3 =0[/tex]
[tex]x= - \frac{19}{15}\\x: 3[/tex]
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Verified answer
Respuesta:
Explicación paso a paso:
a) 3x²+2=5x
[tex]3x^{2}+2-5x= 0[/tex]
[tex]3x{2}-5x +2 = 0[/tex]
[tex]3x{2}- 2x - 3x + 2 = 0[/tex]
x × [tex](3x-2) - 3x+2 = 0[/tex]
[tex](3x-2) x (x-1) = 0[/tex]
[tex]3x-2 = 0\\x- 1 = 0[/tex]
[tex]x = \frac{2}{3} \\x- 1 = 0[/tex]
b) (5x-2)²-(3x + 1)² = x² +60
[tex]25x^{2} - 20x+ 4 - (9x{2}+6x+1)= x^{2} + 60[/tex]
[tex]25x^{2} -20+4- 9x{2} -6x -1= x^{2} +60[/tex]
[tex]16x^{2} -26x+3- x^{2} -60 =0[/tex]
[tex]15x^{2} +19x-45x-57=0[/tex]
x x [tex](15x+19) -3 (15x19)= 0[/tex]
[tex]15x+19= 0\\x-3 =0[/tex]
[tex]x= - \frac{19}{15}\\x: 3[/tex]