Practice mode / Equations and Inequalities If a > b > c which of the following cannot be true? A Option A: b + c < a B Option B: 2a > b + c C Option C: 2c >a+b D Option D: ab >bc E Option E: a+b> 2b + c Correct answer A. b + c < a Show answer Report a problem How we write and check questions
Question 01 / Equations and Inequalities Which of the following is equivalent to: 3×2 + 18x + 27? A Option A: 3 (x2 + 6x +3) B Option B: 3(x+3)(x+6) C Option C: 3(x+3)2 D Option D: 3x (x+6+9) E Option E: 3x2 + x (18+27) Correct answer C. 3(x+3)2 Show answer Open question
Question 02 / Equations and Inequalities If x > 1 and a / b = 1 – 1 / x then b/a =? A Option A: x B Option B: x - 1 C Option C: x ?1/x D Option D: x/(x-1) E Option E: x/x-1 Correct answer D. x/(x-1) Show answer Open question
Question 03 / Equations and Inequalities If x = 2 and y = 3 then (1 / x + 1 / y) / (xy) =? A Option A: 1?9 B Option B: 5?36 C Option C: 36?5 D Option D: 9 E Option E: none Correct answer B. 5?36 Show answer Open question
Question 04 / Equations and Inequalities If r? -s and a = (r-s) / (r+s) +1 then a + 1=? A Option A: 2r / (r+s) + 1 B Option B: (r-s+1) / (r +s) C Option C: (2r-2s) / (r+s) D Option D: 2s / (r+s) E Option E: (1-r+s)/(r+s) Correct answer A. 2r / (r+s) + 1 Show answer Open question
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