Question

purple

Answer 1

This is very easy. If two numbers are multiplied and their product is zero, then either of the two numbers must be zero.

Answer 2

So, \[x + 2 = 0\tag{1}\] OR\[x^2 + 3x - 40 = 0\tag{2}\]\((1)\) is a simple linear equation, and \((2)\) can be solved by factoring.