Maths Exam

1. Expand the Brackets

1. Expand the brackets to simplify the following:$$ -4\left(2a + 2j\right) $$
Correct Answer
$$ -8a - 8j $$
2. Expand the brackets to simplify the following:$$ 4\left(2P + (-A)\right) $$
Correct Answer
$$ 8P - 4A $$

2. Expand the Brackets

1. Expand the brackets to simplify the following:$$ {\left(4X + -3Q\right)}^{2} $$
Correct Answer
$$ 16{X}^{2} - 24XQ + 9{Q}^{2} $$
2. Expand the brackets to simplify the following:$$ {\left(-6a + -3y\right)}^{2} $$
Correct Answer
$$ 36{a}^{2} + 36ay + 9{y}^{2} $$

3. Collect Like Terms

1. Collect like terms to simplify the following:$$ 5c + 2h + 3z + -5h $$
Correct Answer
$$ 5c + -3h + 3z $$
2. Collect like terms to simplify the following:$$ -2c + 2Q + 5l + 5Q $$
Correct Answer
$$ -2c + 7Q + 5l $$

4. Adding fractions

1. Simplify the following:$$ \frac{-3x + -5}{-3x + 6} + \frac{-4x + 2}{-4x + 6} $$
Correct Answer
$$ \frac{24{x}^{2} + -28x - 18}{12{x}^{2} - 42x + 36} $$
2. Simplify the following:$$ \frac{-3x + 1}{-6x + 1} + \frac{-5x + -1}{1x + -2} $$
Correct Answer
$$ \frac{27{x}^{2} + 8x - 3}{-6{x}^{2} + 13x - 2} $$

5. Evaluate the following equations.

1. Find h to 3 significant figures in the following equation: $$ h = \frac{\left(x + y\right)\left(2x - \sin\left(z\right)\right)}{\cos\left(z\right)},$$ Given that x = -6.0, y = 3.0, z = -2.0
Correct Answer
-80.0
2. Find k to 3 significant figures in the following equation: $$ k = \frac{\exp\left(y\right) - \exp\left(z\right)}{\sin\left(\frac{(-x)}{2}\right)},$$ Given that x = -1.0, y = 3.0, z = 2.0
Correct Answer
26.5

6. Rearrange the following equation.

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

7. Quadratic Equation

Solve the following equation to get a value for x:$$(-{x}^{2}) + 5x + -6 = 0$$
Correct Answer
$$2$$ and $$3$$

8. Expand the Brackets

1. Expand the brackets to simplify the following:$$ 3\left(4a + 2j\right) $$
Correct Answer
$$ 12a + 6j $$
2. Expand the brackets to simplify the following:$$ -4\left(-3i + -2Q\right) $$
Correct Answer
$$ 12i + 8Q $$

9. Expand the Brackets

1. Expand the brackets to simplify the following:$$ {\left(-5x + -4y\right)}^{2} $$
Correct Answer
$$ 25{x}^{2} + 40xy + 16{y}^{2} $$
2. Expand the brackets to simplify the following:$$ {\left(-2c + -3y\right)}^{2} $$
Correct Answer
$$ 4{c}^{2} + 12cy + 9{y}^{2} $$

10. Collect Like Terms

1. Collect like terms to simplify the following:$$ -5x + -4y + 6n + -5y $$
Correct Answer
$$ -5x + -9y + 6n $$
2. Collect like terms to simplify the following:$$ 2e + 4d + 6Z + 1d $$
Correct Answer
$$ 2e + 5d + 6Z $$


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