Concept explainers
For Exercises 33–56, find the LCD. Then convert each expression to an equivalent expression with the denominator equal to the LCD. (See Examples 3–5.)
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Beginning and Intermediate Algebra
- Determine whether each expression in Exercises 24–27 isa polynomial. If it is, state the degree of the polynomial.arrow_forwardShow me how to do number 86 pleasearrow_forwardMake Sense? In Exercises 135–138, determine whether each statement makes sense or does not make sense, and explain your reasoning. 135. I use the same ideas to multiply (V2 + 5) (V2 + 4) that I did to find the binomial product (x + 5)(x + 4). 136. I used a special-product formula and simplified as follows: (V2 + V5)? = 2 + 5 = 7. 137. In some cases when I multiply a square root expression and its conjugate, the simplified product contains a radical. 138. I use the fact that 1 is the multiplicative identity to both rationalize denominators and rewrite rational expressions with a common denominator.arrow_forward
- In Exercises 83–90, perform the indicated operation or operations. 83. (3x + 4y)? - (3x – 4y) 84. (5x + 2y) - (5x – 2y) 85. (5x – 7)(3x – 2) – (4x – 5)(6x – 1) 86. (3x + 5)(2x - 9) - (7x – 2)(x – 1) 87. (2x + 5)(2r - 5)(4x? + 25) 88. (3x + 4)(3x – 4)(9x² + 16) (2x – 7)5 89. (2x – 7) (5x – 3)6 90. (5x – 3)4arrow_forward-4(9-7)arrow_forwardド| ○ 3. 1.arrow_forward
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- 4.3.PS-17 Question Help Explain whether 11t- 4t is equivalent to 4t - 11t. Support your answer by evaluating the expressions for t= 2. The expression 11t - 4t in 11t - 4t belongs to the equivalent to 4t- 11t because the negative sig is not isarrow_forwardFind A. 6-2 (4A) 1 -2 1. A = Need Help? Read It Watch Itarrow_forwardExplain why this exact step being displayed in this problem is being taken.arrow_forward
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