Question

What is the solution of the
quadratic equation x²-72 +6=0​

Answer 1

Step-by-step explanation:

${x}^{2} + 6x - 72 = 0 \\ {x}^{2} + 12x - 6x - 72 = 0 \\ x(x + 12) - 6(x + 12) = 0 \\ (x - 6)(x + 12) = 0 \\ so \\ x = 6 \: \: \: or \: \: x = - 12$

Answer 2

Answer:

x square - 72 + 6 = 0

x square - 72 = -6

x square = -6 + 72

x square = 66

x = root 66

x = 8.1