Matemáticas
Multiplying Monomials
Monomials A monomial is a number, a variable, or the product of a number and one or more variables withnonnegative integer exponents. An expression of the form xn is called a power and represents the product you obtain when x is used as a factor ntimes. To multiply two powers that have the same base, add the exponents.
Product of Powers | For any number a and all integers m and n, am· an = am + n. |
Example 1 Simplify (3x6)(5x2). | Example 2 Simplify (-4a3b)(3a2b5). |
Simplify each expression.
1. y(y5)
2.(-7x2)(x4)
3. (-x3)(-x4)
4. (2a3b)(6b3)
5. (-3j2k4)(2jk6)
6. (10x3yz2)(-2xy5z)
Simplify Expressions Anexpression of the form (xm)n is called a power of a power and represents the product you obtain when xm is used as a factor n times. To find thepower of a power, multiply exponents.
Power of a Power | For any number a and all integers m and n, (am)n = amn. |
Power of a Product | Forany number a and all integers m and n, (ab)m = ambm. |
Example Simplify (-2ab2)3(a2)4.
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Exercises
Simplify each expression.1. (y5)2
2. (x2)5(x3)
3. -3(ab4)3
4. (-3ab4)3
5. (4a2)2(b3)
6. (-4xy)3(-2x2)3
7. (-3j2k3)2(2j2k)38. (25a 2b) 3 (15abf)2
9. (2x3y2z2)3(x2z)4
10. (-2n6y5)(-6n3y2)(ny)3
11. (-3a3n4)(-3a3n)4
12. -3(2x)4(4x5y)2
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