Ariana shaded parts of the hundredths model below to represent the product of two numbers . Which equation does the model represent?

What is the product of the radical expression. (7-2square root) (8+2 square root)

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

Given the quadratic function f(x)=3x^2-24x+49 a. use “completing the squares” to convert the quadratic function into vertex form b. state the vertex c. find the x and y intercepts d. graph the function