The graph of the quadratic expression
\(y=x^2 + x - 2\)
\(y=x^2 - x + 2\)
\(y=x^2 - x - 2\)
\(y=x + x + 2\)
\(y=x^2 - 2 x - 2\)
Correct answer is C
No explanation has been provided for this answer.
In the diagram above, the area of triangle ABC is 35cm2, find the value of y
5cm
10cm
17.5cm
28cm
70cm
Correct answer is B
No explanation has been provided for this answer.
A die with faces numbered 1 to 6 is rolled once. What is the probability of obtaining 4?
\(\frac{1}{36}\)
\(\frac{1}{6}\)
\(\frac{1}{3}\)
\(\frac{1}{2}\)
\(\frac{2}{3}\)
Correct answer is B
When the die is rolled, occasion of getting 4
P(obtaining a 4) = \(\frac{1}{6}\)
= \(\frac{1}{6}\)
34%
35%
37%
38%
50%
Correct answer is D
No explanation has been provided for this answer.
Express as a single fraction: \(\frac{x}{x-2}-\frac{x+2}{x+3}\)
\(\frac{2x^2 - 3x - 4}{(x-2)(x+3)}\)
\(\frac{2x^2 + 3x - 4}{(x-2)(x+3)}\)
\(\frac{2}{(x-2)(x+3)}\)
\(\frac{ 3x + 4}{(x-2)(x+3)}\)
\(\frac{3x - 4}{(x-2)(x+3)}\)
Correct answer is D
\(\frac{x}{x-2}-\frac{x+2}{x+3}\)
\(\frac{[x][x+3] - [x+2][x-2]}{[x-2][x+3]}\)
= \(\frac{x^2 + 3x - x^2 - 4}{[x-2][x+3]}\)
= \(\frac{3x - 4}{[x-2][x+3]}\)
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