Question

1°)CALCULE X:

a)
$2 {x}^{2} = - 12x + 18$


b)
${x}^{2} + x - 7 = 5$
​

Answer 1

a)

x² -6x +9 = 0

9 = {1 * 9} , { 3 * 3}

3 + 3 = 6

Raiz dupla 3

b)

x² -x -12 = 0

4 * -3 = -12

4 -3 = 1

4 e -3