Question

factorise
X2 +18x +45​

Answer 1

Answer:

45= 3*3*5

X2+15x+3x+45

=x(x+15)+3(x+15)

x=-3 and x= -15

Answer 2

Answer:

x^2+18x+45

=x^2+15x+3x+45

=x(x+15)+3(x+15)

=(x+15)(x+3)