Simplify each expression using exponent rules. Write each answer in scientific notation.

Question

a). (3x10⁴)(6x10⁶)(2x10⁸)

b). (1x10¹¹)(7x10⁵)²/7x10⁴

Answer 1

a) (3x10^4)(6x10^6(2x10^8) =3(6)(2) x 10^(4+6+8) = 36x10^18 = 3.6 x 10^19

b) (1x10^11)(7x10^5)^2/(7x10^4) = 49/7 x 10^(11+10-4) = 7 x 10^17