if px3+qx2-ax+b=2x3-3x2-4x=5 then values of p, q. a and b are respectively.
Correct answer: C. 2,- 3, 4, 5
- A. 2, 3, 5, 4
- B. 2, 3, 5, -4
- C. 2,- 3, 4, 5
- D. -2, 3, 4, -5
Explanation
Putting in 2, -3, 4,5 for values of p, q, a, and b respectively will make the right side of the equation the same as the left side allowing the equation to be correct for any value of x put in.
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Quantitative reasoning applies arithmetic and basic algebra to numerical relationships, including percentages, ratios, averages, fractions, proportions, profit and loss, rates, time, work and measurement. Questions focus on translating words into equations, choosing an efficient method and checking whether the result is numerically reasonable.
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