Crossword puzzle clue "software with an equation editor"

Software with an Equation Editor

A crossword editor has to be very careful when changing one--unlike this puzzle's editor, who was careless four times herein

Mathematician who proved the impossibility of solving the quintic equation

Equation math

Type of math equation

Creature whose probable existence in the universe is explored by the Drake equation

Girolamo ___, Italian mathematician who first published the solution to the general cubic equation

Like the equation ax^3 + bx^2 + cx + d = 0