## College Algebra (6th Edition)

a). $\frac{b^{7}}{b^{3}}$ = $\frac{b.b.b.b.b.b.b}{b.b.b}$ = $b^{7-3}$ = $b^{4}$ b). $\frac{b^{8}}{b^{2}}$ = $\frac{b.b.b.b.b.b.b.b}{b.b}$ = $b^{8-2}$ = $b^{6}$ c). When dividing exponential expressions with the same base the exponents will be subtracted.