Maths Exam

1. Expand the Brackets

1. Expand the brackets to simplify the following:$$ -2\left(3B + 6Q\right) $$
Correct Answer
$$ -6B - 12Q $$
2. Expand the brackets to simplify the following:$$ (-\left(5i + 4y\right)) $$
Correct Answer
$$ -5i - 4y $$

2. Expand the Brackets

1. Expand the brackets to simplify the following:$$ {\left(-6P + -3Q\right)}^{2} $$
Correct Answer
$$ 36{P}^{2} + 36PQ + 9{Q}^{2} $$
2. Expand the brackets to simplify the following:$$ {\left(4e + -5b\right)}^{2} $$
Correct Answer
$$ 16{e}^{2} - 40eb + 25{b}^{2} $$

3. Collect Like Terms

1. Collect like terms to simplify the following:$$ 1a + 2b + 2n + -3b $$
Correct Answer
$$ a + (-b) + 2n $$
2. Collect like terms to simplify the following:$$ -3c + -5S + 4n + 3S $$
Correct Answer
$$ -3c + -2S + 4n $$

4. Adding fractions

1. Simplify the following:$$ \frac{-4x + 1}{-5x + 2} + \frac{-3x + 2}{-2x + -3} $$
Correct Answer
$$ \frac{23{x}^{2} + -6x + 1}{10{x}^{2} + 11x - 6} $$
2. Simplify the following:$$ \frac{(-x) + -6}{(-x) + -6} + \frac{5x + 3}{(-x) + 2} $$
Correct Answer
$$ \frac{-4{x}^{2} + -29x - 30}{{x}^{2} + 4x - 12} $$

5. Evaluate the following equations.

1. Find k to 3 significant figures in the following equation: $$ k = {3}^{yz} - {3}^{\cos\left(x\right)},$$ Given that x = -5.0, y = -2.0, z = 4.0
Correct Answer
-1.37
2. Find k to 3 significant figures in the following equation: $$ k = \sqrt{\frac{z}{x} - yz},$$ Given that x = 6.0, y = -1.0, z = 1.0
Correct Answer
1.08

6. Rearrange the following equation.

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

7. Quadratic Equation

Solve the following equation to get a value for x:$$(-{x}^{2}) + 5x = 2$$
Correct Answer
$$\frac{(-\left(\sqrt{17} - 5\right))}{2}$$ and $$\frac{(-\left(-5 - \sqrt{17}\right))}{2}$$

8. Expand the Brackets

1. Expand the brackets to simplify the following:$$ 3\left(-5g + -2A\right) $$
Correct Answer
$$ -15g - 6A $$
2. Expand the brackets to simplify the following:$$ -2\left(1B + 3h\right) $$
Correct Answer
$$ -2B - 6h $$

9. Expand the Brackets

1. Expand the brackets to simplify the following:$$ {\left(-3P + -5b\right)}^{2} $$
Correct Answer
$$ 9{P}^{2} + 30Pb + 25{b}^{2} $$
2. Expand the brackets to simplify the following:$$ {\left(2i + -3A\right)}^{2} $$
Correct Answer
$$ 4{i}^{2} - 12iA + 9{A}^{2} $$

10. Collect Like Terms

1. Collect like terms to simplify the following:$$ 6P + 1S + 2l + 4S $$
Correct Answer
$$ 6P + 5S + 2l $$
2. Collect like terms to simplify the following:$$ 4a + 1b + 5z + 2b $$
Correct Answer
$$ 4a + 3b + 5z $$


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