Question

b^2+2b-48=0

Answer 1

\[b^2+2b-48=0\]
split middle term so coeffs multiply to -48\[\implies b^2-6b+8b-48\]

Answer 2

\[\implies \Large b \left( b-6 \right)+8\left( b-6 \right)=0\]\[\implies \Large \left( b-6 \right)\left( b+8 \right)=0\]