Maths Exam

1. Expand the Brackets

1. Expand the brackets to simplify the following:$$ -4\left(-6c + 5Q\right) $$
Correct Answer
$$ 24c - 20Q $$
2. Expand the brackets to simplify the following:$$ 4\left(6x + 6d\right) $$
Correct Answer
$$ 24x + 24d $$

2. Expand the Brackets

1. Expand the brackets to simplify the following:$$ {\left(-3B + 1Y\right)}^{2} $$
Correct Answer
$$ 9{B}^{2} - 6BY + {Y}^{2} $$
2. Expand the brackets to simplify the following:$$ {\left(-3i + 2Q\right)}^{2} $$
Correct Answer
$$ 9{i}^{2} - 12iQ + 4{Q}^{2} $$

3. Collect Like Terms

1. Collect like terms to simplify the following:$$ 4a + -4Y + -2n + -3Y $$
Correct Answer
$$ 4a + -7Y - 2n $$
2. Collect like terms to simplify the following:$$ 2i + -6y + -2z + 1y $$
Correct Answer
$$ 2i + -5y - 2z $$

4. Adding fractions

1. Simplify the following:$$ \frac{3x + -5}{3x + -6} + \frac{1x + -5}{1x + -3} $$
Correct Answer
$$ \frac{6{x}^{2} + -35x + 45}{3{x}^{2} - 15x + 18} $$
2. Simplify the following:$$ \frac{1x + 3}{(-x) + -6} + \frac{-3x + -5}{-6x + -4} $$
Correct Answer
$$ \frac{-3{x}^{2} + x + 18}{6{x}^{2} + 40x + 24} $$

5. Evaluate the following equations.

1. Find k to 3 significant figures in the following equation: $$ k = \frac{\cos\left(z\right)}{\ln\left(x\right)} + \cos\left(\sqrt{y}\right),$$ Given that x = 2.0, y = 3.0, z = -4.0
Correct Answer
-1.10
2. Find h to 3 significant figures in the following equation: $$ h = \left(x - z\right)\cos\left(y\right) + \exp\left(\frac{(-x)}{2}\right),$$ Given that x = -1.0, y = 3.0, z = 2.0
Correct Answer
4.62

6. Rearrange the following equation.

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

7. Quadratic Equation

Solve the following equation to get a value for x:$$-4{x}^{2} + -2x = -5$$
Correct Answer
$$\frac{(-\left(2 + \sqrt{84}\right))}{8}$$ and $$\frac{(-\left(2 - \sqrt{84}\right))}{8}$$

8. Expand the Brackets

1. Expand the brackets to simplify the following:$$ 1\left(-2B + -5b\right) $$
Correct Answer
$$ -2B - 5b $$
2. Expand the brackets to simplify the following:$$ 4\left(6P + (-d)\right) $$
Correct Answer
$$ 24P - 4d $$

9. Expand the Brackets

1. Expand the brackets to simplify the following:$$ {\left(1B + -6Y\right)}^{2} $$
Correct Answer
$$ {B}^{2} - 12BY + 36{Y}^{2} $$
2. Expand the brackets to simplify the following:$$ {\left(6i + -5h\right)}^{2} $$
Correct Answer
$$ 36{i}^{2} - 60ih + 25{h}^{2} $$

10. Collect Like Terms

1. Collect like terms to simplify the following:$$ (-P) + 4y + -5z + -2y $$
Correct Answer
$$ (-P) + 2y - 5z $$
2. Collect like terms to simplify the following:$$ 5g + 3S + 4l + 5S $$
Correct Answer
$$ 5g + 8S + 4l $$


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