Factorize the following algebraic expression:
x2+16x-38=0
show procedure and tell me which factorization method you used
(note: x2 means x squared)

X^2+16-38=0
find what 2 numbers multiply to get -38 and add to get 16
find factors of 38
2 times 19
there is no way to use common factor so use quadratic formula which is
x= or x=

ax^2+bx+c=0 subsitte
a=1
b=16
c=-38
subsitute
== = =
so the answers for x are and   which are aprox -2.099504938362 and +18.099504938362
so it would be
(x-[-8+√102])(x+[8+√102])=0