(2y - 3x) (y + 6x)
(2y - 3x) (y - 6x)
(2y + 3x) (y - 6x)
(3y + 2x) (y - 6x)
Correct answer is B
2y2 - 15xy + 18x2
2y2 - 12xy - 3xy + 18x2
2y(y - 6x) - 3x(y - 6x)
(2y - 3x) (y - 6x)
If gt2 - k - w = 0, make g the subject of the formula
\(\frac{k + w}{t^2}\)
\(\frac{k - w}{t^2}\)
\(\frac{k + w}{t}\)
\(\frac{k - w}{t}\)
Correct answer is A
gt2 - k - w = 0
gt2 = k + w
\(g = \frac{k + w}{t^2}\)
If P = {1,2,3,4,5} and P \(\cup\) Q = {1,2,3,4,5,6,7}, list the elements in Q
{6}
{7}
{6,7}
{5,6}
Correct answer is C
Q = (P \(\cup\) Q) - P
{6,7}
Evaluate Log28 + Log216 - Log24
3
4
5
6
Correct answer is C
\( = log_2 \frac{8 \times 16}{4}\)
\( = log_2 32\)
\( = log_2 2^5\)
\( = 5log_2 2\)
\( = 5 \times 1\)
\( = 5 \)
Simplify \(\frac{2\sqrt{2} - \sqrt{3}}{\sqrt{2} + \sqrt{3}}\)
3\(\sqrt{6} - 7\)
3\(\sqrt{6} + 7\)
3\(\sqrt{6} - 1\)
3\(\sqrt{6} + 1\)
Correct answer is A
\(= \frac{2\sqrt{2} - \sqrt{3}}{\sqrt{2} + \sqrt{3}} \times \frac{\sqrt{2} - \sqrt{3}}{\sqrt{2} - \sqrt{3}}\)
\(= \frac{2\sqrt{2}(\sqrt{2}) + (2\sqrt{2})(-\sqrt{3})-\sqrt{3}(\sqrt{2})-\sqrt{3}(-\sqrt{3})}{(\sqrt{2})^2-(\sqrt{3})^2}\)
\(= \frac{2 \times 2 - 2\sqrt{6} - \sqrt{6} + 3}{2 - 3}\)
\(= \frac{4 - 3\sqrt{6} + 3}{-1}\)
\(= \frac{7 - 3\sqrt{6}}{-1}\)
\(= \frac{7}{-1} - \frac{3\sqrt{6}}{-1}\)
\(= -7 + 3\sqrt{6}\)
\(= 3\sqrt{6}-7\)