Maths Exam

1. Expand the Brackets

1. Expand the brackets to simplify the following:$$ 3\left((-B) + 5A\right) $$
Correct Answer
$$ -3B + 15A $$
2. Expand the brackets to simplify the following:$$ 3\left((-B) + 1f\right) $$
Correct Answer
$$ -3B + 3f $$

2. Expand the Brackets

1. Expand the brackets to simplify the following:$$ {\left(1i + -5f\right)}^{2} $$
Correct Answer
$$ {i}^{2} - 10if + 25{f}^{2} $$
2. Expand the brackets to simplify the following:$$ {\left(2a + -5Y\right)}^{2} $$
Correct Answer
$$ 4{a}^{2} - 20aY + 25{Y}^{2} $$

3. Collect Like Terms

1. Collect like terms to simplify the following:$$ 3X + (-Y) + 4m + -3Y $$
Correct Answer
$$ 3X + -4Y + 4m $$
2. Collect like terms to simplify the following:$$ 6R + 1Y + 5v + 3Y $$
Correct Answer
$$ 6R + 4Y + 5v $$

4. Adding fractions

1. Simplify the following:$$ \frac{1x + -1}{-4x + 6} + \frac{4x + 3}{6x + 3} $$
Correct Answer
$$ \frac{-10{x}^{2} + 9x + 15}{-24{x}^{2} + 24x + 18} $$
2. Simplify the following:$$ \frac{-5x + -3}{-3x + -4} + \frac{-5x + -3}{-6x + -5} $$
Correct Answer
$$ \frac{45{x}^{2} + 72x + 27}{18{x}^{2} + 39x + 20} $$

5. Evaluate the following equations.

1. Find h to 3 significant figures in the following equation: $$ h = \left(-1 - x\right)\sin\left(z\right) + \frac{z - 3}{\exp\left(y\right)},$$ Given that x = -4.0, y = 6.0, z = 3.0
Correct Answer
0.423
2. Find h to 3 significant figures in the following equation: $$ h = \exp\left(\frac{-2}{y} - \left(z + x\right)\right),$$ Given that x = -6.0, y = -6.0, z = -5.0
Correct Answer
83600

6. Rearrange the following equation.

1. Rearrange the following equation to get an expression for m: $$\frac{xz\ln\left(z - y\right)}{\sin\left(z\right)} = \frac{4 + m - \cos\left(x\right)}{\sin\left(z - 1\right)},$$
Correct Answer
$$m = \frac{xz\ln\left(z - y\right)}{\sin\left(z\right)}\sin\left(z - 1\right) + \cos\left(x\right) - 4$$
2. Rearrange the following equation to get an expression for m: $$\frac{x\left(y - 6\right)}{z} - \sin\left(y + 3\right) = \frac{\left(x - z\right)\left(-6z - m\right)}{\sqrt{y}},$$
Correct Answer
$$m = -6z - \frac{\left(\frac{x\left(y - 6\right)}{z} - \sin\left(y + 3\right)\right)\sqrt{y}}{x - z}$$

7. Quadratic Equation

Solve the following equation to get a value for x:$$-4{x}^{2} + 6x + 5 = 0$$
Correct Answer
$$\frac{(-\left(\sqrt{116} - 6\right))}{8}$$ and $$\frac{(-\left(-6 - \sqrt{116}\right))}{8}$$

8. Expand the Brackets

1. Expand the brackets to simplify the following:$$ 4\left(-5e + -4j\right) $$
Correct Answer
$$ -20e - 16j $$
2. Expand the brackets to simplify the following:$$ 6\left(3B + 1Q\right) $$
Correct Answer
$$ 18B + 6Q $$

9. Expand the Brackets

1. Expand the brackets to simplify the following:$$ {\left(-2x + -3h\right)}^{2} $$
Correct Answer
$$ 4{x}^{2} + 12xh + 9{h}^{2} $$
2. Expand the brackets to simplify the following:$$ {\left(2P + 6j\right)}^{2} $$
Correct Answer
$$ 4{P}^{2} + 24Pj + 36{j}^{2} $$

10. Collect Like Terms

1. Collect like terms to simplify the following:$$ -2e + -5Q + -4n + -4Q $$
Correct Answer
$$ -2e + -9Q - 4n $$
2. Collect like terms to simplify the following:$$ 4R + -5f + (-v) + 3f $$
Correct Answer
$$ 4R + -2f - v $$


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