Solutions To Mathematics Textbooks/Calculus Early Transcendentals (6th) (0495011665)/Diagnostic Tests

=Diagnostic Tests=

1
a) $$(-3)^4 = (-3)^2 \cdot (-3)^2 = 9 \cdot 9 = 81\,$$

b) $$-3^4 = -(3^4) = -81 \,$$