PHP Taskbook Level 10.2

Задание 1

Write a script that will find the roots of a quadratic equation. To do this, make 3 inputs into which the equation coefficients will be entered.

Задание 2

Given an input and a button. Upon submitting the form, output a list of ul all excess numbers from the interval specified by the input values.

Задание 3

Given an arbitrary two-dimensional array:

php[
  [11, 12, 13],
  [21, 22, 23],
  [31, 32, 33],
]

Write code that will add another column to the array filled with random values:

php[
  [11, 12, 13, 14],
  [21, 22, 23, 24],
  [31, 32, 33, 34],
]

Задание 4

When you enter the page, fill in half of the table as follows: