Question

Me puden ayudar con esas ecuaciones rapido Porfavo
x² - 49 = 0 12) x² - 100 = 0,x² - 8x = -12 14) 3x² - 27 = 0,x² 4x = 32 16) x(x + 8) = 48

Answer 1

Respuesta:

${x}^{2} - 49 = 0 \\ {x}^{2} = 49 \\ x = 7$

${x}^{2} - 100 = 0 \\ {x}^{2} = 100 \\ x = 10$

${x}^{2} - 8x = - 12 \\ {x}^{2} - 8x + 12 = 0 \\ x1 =6\\x2= 2$

$3 {x}^{2} - 27 = 0 \\ 3 {x}^{2} = 27 \\ {x}^{2} = 9 \\ x = 3$

$\: {x}^{2} + 4x = 32 \\ {x}^{2} + 4x - 32 = 0 \\ x1 = 4 \\ x2 = - 8$

$4x = 32 \\ x = 8$

$x(x + 8) = 48 \\ {x}^{2} + 8x - 48 = 0 \\ x1 = 4 \\ x2 = - 12$