Maths Exam

1. Expand the Brackets

1. Expand the brackets to simplify the following:$$ -5\left(1B + 1y\right) $$
Correct Answer
$$ -5B - 5y $$
2. Expand the brackets to simplify the following:$$ -3\left(3X + -6d\right) $$
Correct Answer
$$ -9X + 18d $$

2. Expand the Brackets

1. Expand the brackets to simplify the following:$$ {\left((-x) + 1y\right)}^{2} $$
Correct Answer
$$ {x}^{2} - 2xy + {y}^{2} $$
2. Expand the brackets to simplify the following:$$ {\left(-2P + -2Y\right)}^{2} $$
Correct Answer
$$ 4{P}^{2} + 8PY + 4{Y}^{2} $$

3. Collect Like Terms

1. Collect like terms to simplify the following:$$ 3g + -6Q + 4z + -4Q $$
Correct Answer
$$ 3g + -10Q + 4z $$
2. Collect like terms to simplify the following:$$ -6R + -2d + 2v + 1d $$
Correct Answer
$$ -6R + (-d) + 2v $$

4. Adding fractions

1. Simplify the following:$$ \frac{6x + 3}{-4x + -5} + \frac{3x + 3}{2x + -2} $$
Correct Answer
$$ \frac{-33x - 21}{-8{x}^{2} - 2x + 10} $$
2. Simplify the following:$$ \frac{5x + 3}{6x + -4} + \frac{5x + 3}{2x + -5} $$
Correct Answer
$$ \frac{40{x}^{2} + -21x - 27}{12{x}^{2} - 38x + 20} $$

5. Evaluate the following equations.

1. Find B to 3 significant figures in the following equation: $$ B = \sin\left(z\right)\ln\left(z\right) - \cos\left(xy\right),$$ Given that x = -2.0, y = -2.0, z = 3.0
Correct Answer
0.809
2. Find h to 3 significant figures in the following equation: $$ h = \frac{y}{z} - \ln\left(\sqrt{x}\right),$$ Given that x = 3.0, y = -1.0, z = -1.0
Correct Answer
0.451

6. Rearrange the following equation.

1. Rearrange the following equation to get an expression for m: $$\left(3 - x + y - z\right)\left(z - 2 - \sin\left(z\right)\right) = \frac{yz + mz}{\cos\left(z - x\right)},$$
Correct Answer
$$m = \frac{\left(3 - x + y - z\right)\left(z - 2 - \sin\left(z\right)\right)\cos\left(z - x\right) - yz}{z}$$
2. Rearrange the following equation to get an expression for m: $${4}^{6y} - \cos\left(xz\right) = \frac{-5xm}{z},$$
Correct Answer
$$m = \frac{\frac{\left({4}^{6y} - \cos\left(xz\right)\right)z}{-5}}{x}$$

7. Quadratic Equation

Solve the following equation to get a value for x:$$-4{x}^{2} + 1x = -3$$
Correct Answer
$$\frac{-3}{4}$$ and $$1$$

8. Expand the Brackets

1. Expand the brackets to simplify the following:$$ -5\left(4g + 3Q\right) $$
Correct Answer
$$ -20g - 15Q $$
2. Expand the brackets to simplify the following:$$ (-\left(-6c + 6f\right)) $$
Correct Answer
$$ 6c - 6f $$

9. Expand the Brackets

1. Expand the brackets to simplify the following:$$ {\left(-2e + 5h\right)}^{2} $$
Correct Answer
$$ 4{e}^{2} - 20eh + 25{h}^{2} $$
2. Expand the brackets to simplify the following:$$ {\left((-B) + -2d\right)}^{2} $$
Correct Answer
$$ {B}^{2} + 4Bd + 4{d}^{2} $$

10. Collect Like Terms

1. Collect like terms to simplify the following:$$ -2g + -3j + 2u + -5j $$
Correct Answer
$$ -2g + -8j + 2u $$
2. Collect like terms to simplify the following:$$ -2g + -5Q + -3m + -5Q $$
Correct Answer
$$ -2g + -10Q - 3m $$


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