Find the real solutions of the equation. Use a calculator to express the solutions rounded to two decimal places.?(1 + x)2 - 5 = 2(1 + x)

A. {-0.62, -0.18}
B. {-1.62, -0.62}
C. {-0.62, 0.82}
D. {0.62, -1.98}


Answer: D

Mathematics

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Solve.Horsepower developed by an engine is directly proportional to its displacement. How many horsepower will be developed by an engine with a displacement of 320 cu in. if a 280-cu in. engine of the same kind develops 200 hp? (Round to the nearest whole number, if necessary.)

A. 224 hp B. 229 hp C. 240 hp D. 232 hp

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Find the exact value by using a half-angle identity.cos 

A.  
B. -  
C.  
D. -   

Mathematics

Using synthetic division, determine whether the numbers are zeros of the polynomial.2, -4; f(x) = x3 - 5x2 - 22x + 56

A. No; yes B. Yes; yes C. Yes; no D. No; no

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Combine like terms in the expression. Answer "not possible" if terms cannot be combined.11yz + 7yz

A. 18yz B. 36yz C. 77y D. 18y2z

Mathematics