Question

(2x-3)(2x+3)-x(x-1)=5​

Answer 1

Explicación paso a paso:

$(2x - 3)(2x + 3) - x(x - 1) = 5 \\ 4 {x}^{2} + 6x - 6x - 9 - x ^{2} - x = 5 \\ 3 {x}^{2} - 1x - 9 = 5 \\ 3 {x}^{2} - 1x - 9 - 5 = 0 \\ 3 {x}^{2} - 1x - 14 = 0 \\ formula \: resolvente \\ a = 3 \: \: \: b = - 1 \: \: c = - 14 \\ x1 = 2.33 \\ x2 = - 2$

Answer 2

Respuesta:

x1= -7/3, x2=2

Explicación paso a paso:

(2x-3)(2x+3)-x(x-1)=5​

3x2 - 9 + x =5

3x2 - 14 + x =0

3x2 + 7x - 6x - 14 = 0

(3x + 7) (x - 2) = 0

3x+7=0               x-2=0

x= - 7/3               x=2