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For Exercises 65–70, multiply or divide as indicated. (See Example 7.)
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- Find the value of a + b + c in the following diagram.arrow_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_forwardChap 6 13arrow_forward
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- Did you use the product rule as well? I would like some clarification on the steps.arrow_forward4.3.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_forwardRemove the brackets for the expression below (x10 + x8 – 10) (3 x + 1)arrow_forward
- If possible, write -11 – 6x + 5r? as a linear combination of -2 – z + 22, 2 – z2 and 5 + z – 2x?. Otherwise, enter DNE in all answer blanks. -11 - 6z + 5x2 (-2 - z+r?)+ (2 – 22)+ (5 +z - 22?). %3!arrow_forward5. Describe and correct the error in performing the given operation: (2x – 7) = (2x)³ – 73 = 8x – 343 (3x – 2x² + 4x – 8) – (5x² + 12x² – 3x – 4)arrow_forwardA professor use chi-square test to examine the relationship between smoking and colon cancer. He followed a total of 480 people and the result was listed below. How many degrees of freedom are there in this table? No Colon Total Frequency Colon Cancer Cancer Smokers 120 80 200 Non-smokerS 25 255 280 Total 145 335 480 For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac).arrow_forward
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