뒤로
문제 107
Simplify by reducing the index of the radical.
문제 108
Simplify by reducing the index of the radical.
문제 3
Is the algebraic expression a polynomial? If it is, write the polynomial in standard form. (2x+3)/x
문제 19
Find each product. (x+7)(x+3)
문제 22
Find each product. (x−1)(x+2)
문제 26
Find each product. (2x−5)(7x+2)
문제 32
Find each product. (x+5)(x−5)
문제 35
Find each product. (5−7x)(5+7x)
문제 86
Perform the indicated operation or operations. (3x+5)(2x−9)−(7x−2)(x−1)
문제 1
Factor out the greatest common factor.
문제 5
Factor out the greatest common factor.
문제 38
Factor each trinomial, or state that the trinomial is prime.
문제 42
Factor the difference of two squares.
문제 49
Factor each perfect square trinomial.
문제 56
Factor each perfect square trinomial.
문제 58
Factor using the formula for the sum or difference of two cubes.
문제 60
Factor using the formula for the sum or difference of two cubes.
문제 66
Factor completely, or state that the polynomial is prime.
문제 102
Factor and simplify each algebraic expression.
문제 1
Find all numbers that must be excluded from the domain of each rational expression. 7/(x−3)
문제 11
Simplify each rational expression. Find all numbers that must be excluded from the domain of the simplified rational expression.
문제 16
Multiply or divide as indicated.
문제 21
Multiply or divide as indicated.
문제 24
Multiply or divide as indicated.
문제 34
Add or subtract as indicated. (3x+2)/(3x+4) + (3x+6)/(3x+4)
문제 37
Add or subtract as indicated. (4x−10)/(x−2) − (x−4)/(x−2)
문제 41
In Exercises 33–68, add or subtract as indicated. 5/x + 3
문제 47
Add or subtract as indicated. 2/5x − (x+1)/4x
문제 50
In Exercises 33–68, add or subtract as indicated.
문제 53
In Exercises 33–68, add or subtract as indicated. 3/(x+1) − 3/x