bra 1: U4- Quadratics Solving Quadratics by Fa olve the quadratic by factoring. \[ x^{2}-12=-3 \]

Step 1 ：Rewrite the equation in standard form: x^2 - 9 = 0

Step 2 ：Factor the equation: (x - 3)(x + 3) = 0

Step 3 ：Solve for x: x = 3, x = -3

Step 4 ：Check the solutions: (3)^2 - 12 = -3, (-3)^2 - 12 = -3

Step 5 ：Final answer: x = 3, x = -3