Simplify. Write your answer using only positive exponents.
1) 3a2b­3c­5
2) ­8x­3yz0
3) 3­3a­4
3
4) x­2
y
a­3b2
5) ­2
c d
Write in scientific notation: 0.0000483
934.2 x 105 0.873 x 10­3 1
Multiplying Monomials Monomial: an expression that is either a numeral, a variable, or the product of a numeral and one or more variables.
2
Ex. 14, z, ­8x2y, 3 abc
Constant: a numeral in an expression or equation
Ex. 14
Coefficient: the numeral in the monomial
Ex. 4x2y; 4 is the coefficient
­8ab3; ­8 is the coefficient
2
Products of Powers
Simplify
a.
87 82
b.
x3 x5
c.
n7 n4
Rule: Simplify
a.
3n2 4n4
b.
(­8a3b2)(5ab4)
c.
6nx 2nx+1
When there are coefficients; 3
Simplify
How do I do 20 12 ?
3 5
Think: a. 20x2y 12x3y5
3 5
2n5 3n­2
m2 n­2 7m
Find the missing exponent or factor
a.
x3 x? = x9
c.
2a3b2 _____ = 8a6b6
b.
2n3 n? 3n4 = 6n8
4