3a+b
a−3ba2−b2
\frac{3a-b}{a^2 – b^2}
\frac{a-3b}{a^2+b^2}
Correct answer is B
Simplify \frac{2}{a+b}-\frac{1}{a-b}; \frac{2(a-b)-1(a+b)}{(a+b)(a-b)}
= \frac{2a-2b-a-b}{(a+b)(a-b)}
= \frac{a-3b}{a^2 - ab + ab - b^2}
= \frac{a-3b}{a^2-b^2}
Solve the equation: 3a + 10 = a^2...
If y + \frac{1}{y} = 9, evaluate y2 + \frac{1}{y^2}...
The bearing S40°E is the same as...
Find the standard deviation of 2, 3, 5 and 6 ...
Which of the following is equal to \frac{72}{125}...
In triangles XYZ and XQP, XP = 4cm, XQ = 5cm and PQ = QY = 3cm. Find ZY ...
If log_{10} 2 = 0.3010 and log_{10} 3 = 0.4771, evaluate; without using logarithm tables, \(...