## Elementary Algebra

$-24x^3+3x^2$
RECALL: (i) $a^m \cdot a^n = a^{m+n}$ (ii) $a(b-c) = ab - ac$ Use the rules above to obtain: $=(-3x^2)(8x) - (-3x^2)(1) \\=-24x^{2+1} - (-3x^2) \\=-24x^3+3x^2$