2
6
18
12
5
Correct answer is D
(3x+1)2=(3x−1)2+x2 (Pythagoras's theorem) 9x2+6x+1=9x2−6x+1+x2 x2 - 12x = 0 x(x - 12) = 0 x = 0 or 12
The sides cannot be 0 hence x = 12.
make w the subject of the relation a+bcwd+f = g...
The solution of the quadratic equation px2 + qx + b = 0 is...
Correct each of the numbers 59.81798 and 0.0746829 to three significant figures and multiply them, g...
Simplify (√0.7+√70)2 ...
The cost of dinner for a group of students is partly constant and partly varies directly as the numb...
If log 3 = 0.4771 and log 2 = 0.3010, what is the value of log 12?...
The graph of y = x2 and y = x intersect at which of these points?...
Simplify log√27log√81...
Mr Adu spends his annual salary on food(f), rent(r), car maintenance, gifts(g), savings(s) and some ...
The gradient of a curve is 2x + 7 and the curve passes through point (2, 0). find the equation of th...
Spatial Reasoning Questions and Answers
Numerical Reasoning Questions and Answers
Puzzles Questions and Answers
Typing Speed and Accuracy Test
Verbal Reasoning Questions and Answers
Data Interpretation Questions and Answers
Microsoft Office Questions and Answers
Nigeria General Knowledge Questions and Answers
Logical Reasoning Questions and Answers
Situational Judgement Questions and Answers
Abstract Reasoning Questions and Answers
Quantitative Reasoning Questions and Answers
Personality Test
See all →