In Exercises 129–132, determine whether each statement is true
or false. If the statement is false, make the necessary change(s) to
produce a true statement.
129. 9x? + 15x + 25 = (3x + 5)
130. x - 27 = (x – 3)(x² + 6x + 9)
131. x³ – 64 = (x – 4)3
132. 4x2 – 121 = (2x – 11)
Make 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.
Chapter 1 Solutions
Intermediate Algebra for College Students (7th Edition)
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Fundamental Trigonometric Identities: Reciprocal, Quotient, and Pythagorean Identities; Author: Mathispower4u;https://www.youtube.com/watch?v=OmJ5fxyXrfg;License: Standard YouTube License, CC-BY