Question

How do you solve `(x + 9) ( 2x - 10) = 0`?

Answer 1

`x=-9 or x=5`

Explanation:

If `(x+9)(2x-10)=0` then
#{: ("either ",x+9=0," or ",2x-10=0), (,rarrx=-9,,rarrx=5) :}#