Question

7(x-4)^2-3(x+5)^2=4(x+1)(x-1)-2

Answer 1

Respuesta:

x=(1/2)

Explicación paso a paso:

Answer 2

Explicación paso a paso:

$7(x - 4) {}^{2} - 3(x + 5) {}^{2} = 4(x + 1)(x - 1) - 2$

$7(x {}^{2} - 8x + 16) - 3(x {}^{2} + 10x + 25) = 4(x + 1)(x - 1) - 2$

$7x {}^{2} - 56x + 112 - 3x {}^{2} - 30x - 75 = 4(x + 1)(x - 1) - 2$

$4x {}^{2} - 86x + 37 = 4(x {}^{2} - 1) - 2$

$- 86x + 37 = - 4 - 2$

$- 86x + 37 = - 6$

$42 = 86x$

$\frac{42}{86} = x$

$\frac{21}{43} = x$