Factorise the following ײ +9×+20
To factorize the expression x² + 9x + 20, we need to find two numbers that multiply to give 20 and add up to give 9. The numbers that meet these conditions are 4 and 5.
Therefore, we can write the equation as:
(x + 4)(x + 5)
Thus, the factorization of x² + 9x + 20 is (x + 4)(x + 5).