## Algebra 1

$(z+4)(5z-1)$
Rewrite 19z as -1z + 20z $5z^{2} + 19z - 4 = 5z^{2} -1z + 20z -4$ Factor out GCF of each pair of terms, which would be $z(5z-1)+4(5z-1)$ Now use distributive property = $(z+4)(5z-1)$