What are the answer to both of these. I am confused. Please Help. I will give Brainliest Answer.

Aquadratic equation in standard from is written ax^2= bx+c, where a, b and c are real numbers and a is not zero?

What value is a discontinuity of x squared plus 8 x plus 4, all over x squared minus x minus 6?

Sanderson is having trouble with his assignment. his shown work is as follows: − 3 7 7 3 = − 3 7 × 7 3 = − 21 21 = −1 however, his answer does not match the answer that his teacher gives him. complete the description of sanderson's mistake. find the correct answer.