What is the smaller solution of x squared - 7x + 10 = 0?

Correct answer to question 147 (Mathematics Knowledge): 2

Method

Find two numbers multiplying to 10 and adding to -7: those are -2 and -5, so the equation factors as (x - 2)(x - 5) = 0. The solutions are 2 and 5, and the smaller is 2.