Maths Exam

1. Expand the Brackets

1. Expand the brackets to simplify the following:$$ (-\left(6x + 1f\right)) $$
Correct Answer
$$ -6x - f $$
2. Expand the brackets to simplify the following:$$ (-\left(2g + -4Q\right)) $$
Correct Answer
$$ -2g + 4Q $$

2. Expand the Brackets

1. Expand the brackets to simplify the following:$$ {\left(-6a + -3y\right)}^{2} $$
Correct Answer
$$ 36{a}^{2} + 36ay + 9{y}^{2} $$
2. Expand the brackets to simplify the following:$$ {\left(6i + 1y\right)}^{2} $$
Correct Answer
$$ 36{i}^{2} + 12iy + {y}^{2} $$

3. Collect Like Terms

1. Collect like terms to simplify the following:$$ (-P) + 5y + -2n + -3y $$
Correct Answer
$$ (-P) + 2y - 2n $$
2. Collect like terms to simplify the following:$$ -3c + -5h + -2v + 3h $$
Correct Answer
$$ -3c + -2h - 2v $$

4. Adding fractions

1. Simplify the following:$$ \frac{-4x + -6}{5x + -6} + \frac{(-x) + -3}{4x + 5} $$
Correct Answer
$$ \frac{-21{x}^{2} + -53x - 12}{20{x}^{2} + x - 30} $$
2. Simplify the following:$$ \frac{3x + 4}{(-x) + -1} + \frac{(-x) + 6}{5x + -6} $$
Correct Answer
$$ \frac{16{x}^{2} + -3x - 30}{-5{x}^{2} + x + 6} $$

5. Evaluate the following equations.

1. Find V to 3 significant figures in the following equation: $$ V = \left((-x) + \cos\left(z\right)\right)\ln\left(\cos\left(y\right)\right),$$ Given that x = -6.0, y = -6.0, z = 2.0
Correct Answer
-0.227
2. Find k to 3 significant figures in the following equation: $$ k = \left(z - 1\right)\sqrt{y} + \sin\left({5}^{x}\right),$$ Given that x = -5.0, y = 5.0, z = 4.0
Correct Answer
6.71

6. Rearrange the following equation.

1. Rearrange the following equation to get an expression for m: $$\frac{y\sqrt{z}}{x\sin\left({2}^{x}\right)} = \frac{{3}^{\left(z + 3\right)}}{mz + \frac{z}{y}},$$
Correct Answer
$$m = \frac{\frac{{3}^{\left(z + 3\right)}}{\frac{y\sqrt{z}}{x\sin\left({2}^{x}\right)}} - \frac{z}{y}}{z}$$
2. Rearrange the following equation to get an expression for m: $$\frac{-6z - \exp\left(y\right)}{\sqrt{x + 5}} = 2z - \sqrt{y} + \frac{my}{\exp\left(z\right)},$$
Correct Answer
$$m = \frac{\left(\frac{-6z - \exp\left(y\right)}{\sqrt{x + 5}} - \left(2z - \sqrt{y}\right)\right)\exp\left(z\right)}{y}$$

7. Quadratic Equation

Solve the following equation to get a value for x:$$3{x}^{2} + 5x = 6$$
Correct Answer
$$\frac{\sqrt{97} - 5}{6}$$ and $$\frac{-5 - \sqrt{97}}{6}$$

8. Expand the Brackets

1. Expand the brackets to simplify the following:$$ 2\left(-2g + -4y\right) $$
Correct Answer
$$ -4g - 8y $$
2. Expand the brackets to simplify the following:$$ -5\left(-5x + -6A\right) $$
Correct Answer
$$ 25x + 30A $$

9. Expand the Brackets

1. Expand the brackets to simplify the following:$$ {\left((-g) + 3Y\right)}^{2} $$
Correct Answer
$$ {g}^{2} - 6gY + 9{Y}^{2} $$
2. Expand the brackets to simplify the following:$$ {\left(-2e + (-j)\right)}^{2} $$
Correct Answer
$$ 4{e}^{2} + 4ej + {j}^{2} $$

10. Collect Like Terms

1. Collect like terms to simplify the following:$$ 5X + 5j + 6z + 6j $$
Correct Answer
$$ 5X + 11j + 6z $$
2. Collect like terms to simplify the following:$$ 2g + 5Q + 4v + -4Q $$
Correct Answer
$$ 2g + Q + 4v $$


Other Articles:

Atmosphere

A simple demo of a simulation of an atmosphere. It looks quite cool, but there's not a lot you can do with it yet, and the physics isn't yet all that accurate.

German Gender and Case Game

Simulation of flooding in New Orleans

A not-very-accurate simulation of the flooding in New Orleans.




© Hugo2015. Session @sessionNumber