Exponents are powerful tools in algebra, allowing us to simplify complex expressions. They represent repeated multiplication, making it easier to work with large numbers and variables. Understanding properties is crucial for solving equations and manipulating algebraic expressions efficiently.
In this section, we'll explore key exponent properties like the product, power, and product-to-power rules. We'll also learn about zero and , , and how to combine these properties to tackle more complex problems.
Exponent Properties
Simplification with exponent properties
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Exponents represent repeated multiplication of a number (23=2×2×2=8)
Properties of exponents simplify expressions by combining or distributing exponents
adds exponents of (am×an=am+n)
multiplies exponents when a power is raised to another power ((am)n=am×n)
distributes an exponent to each factor inside parentheses ((a×b)n=an×bn)
Product property of exponents
Multiply terms with the same base by adding their exponents (x3×x4=x3+4=x7)
Bases must match for the product property to apply (23×33=63)
Simplifies expressions by combining like bases and adding exponents
Power property of exponents
Raise a power to another power by multiplying the exponents ((y2)3=y2×3=y6)
Applies to expressions within parentheses raised to a power (((2x)2)3=(2x)2×3=(2x)6=64x6)
Simplifies expressions by distributing exponents to powers
Product to power property
Raise an expression inside parentheses to a power by distributing the exponent to each term ((2x)3=23×x3=8x3)
Multiplies out each factor within the parentheses by the outside exponent
Simplifies expressions by expanding parentheses and applying the power to each term
Laws of Exponents
: Any number (except 0) raised to the power of 0 equals 1 (a0=1)
Negative exponents: Represent reciprocals of positive exponents (a−n=an1)
Scientific notation: Expresses very large or small numbers using powers of 10 (3.5×106)
Combining exponent properties
Break down complex expressions into smaller parts
Identify and apply the appropriate exponent property for each part
Simplify each part using the applicable property
Combine the simplified parts to obtain the final answer
Simplify (3x2y)3 using the product to power property: 33×(x2)3×y3=27x6y3
Simplify (2xy2)2 using the product to power property: 22×x2×(y2)2=4x2y4
Multiply the simplified parts using the product property: 27x6y3×4x2y4=108x8y7
Monomial multiplication using exponents
Monomials are expressions with a single term (4x3y2)
Multiply monomials by multiplying coefficients and adding exponents of like bases ((4x3y2)×(2xy3)=8x4y5)
Simplify the result by combining like terms and applying exponent properties (12x2y×3xy2=36x3y3)