Maths Exam

1. Expand the Brackets

1. Expand the brackets to simplify the following:$$ -6\left(-5x + -3Q\right) $$
Correct Answer
$$ 30x + 18Q $$
2. Expand the brackets to simplify the following:$$ (-\left((-c) + 1Y\right)) $$
Correct Answer
$$ c - Y $$

2. Expand the Brackets

1. Expand the brackets to simplify the following:$$ {\left(-2e + -5d\right)}^{2} $$
Correct Answer
$$ 4{e}^{2} + 20ed + 25{d}^{2} $$
2. Expand the brackets to simplify the following:$$ {\left(1x + -5h\right)}^{2} $$
Correct Answer
$$ {x}^{2} - 10xh + 25{h}^{2} $$

3. Collect Like Terms

1. Collect like terms to simplify the following:$$ 2c + -6h + 4l + -2h $$
Correct Answer
$$ 2c + -8h + 4l $$
2. Collect like terms to simplify the following:$$ 5P + 5Q + 4n + (-Q) $$
Correct Answer
$$ 5P + 4Q + 4n $$

4. Adding fractions

1. Simplify the following:$$ \frac{6x + -4}{(-x) + -3} + \frac{3x + -2}{4x + 4} $$
Correct Answer
$$ \frac{21{x}^{2} + x - 10}{-4{x}^{2} - 16x - 12} $$
2. Simplify the following:$$ \frac{1x + 4}{-6x + -4} + \frac{6x + 1}{-5x + 3} $$
Correct Answer
$$ \frac{-41{x}^{2} + -47x + 8}{30{x}^{2} + 2x - 12} $$

5. Evaluate the following equations.

1. Find V to 3 significant figures in the following equation: $$ V = {2}^{x}\left(5 - z\right) - \left(x - 6\right)\left(x + y\right),$$ Given that x = 5.0, y = 5.0, z = -4.0
Correct Answer
298
2. Find V to 3 significant figures in the following equation: $$ V = \frac{z\left(1 + y\right)}{y} - \exp\left(\frac{x}{6}\right),$$ Given that x = 6.0, y = 2.0, z = -5.0
Correct Answer
-10.2

6. Rearrange the following equation.

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

7. Quadratic Equation

Solve the following equation to get a value for x:$$1{x}^{2} + 5x = -2$$
Correct Answer
$$\frac{\sqrt{17} - 5}{2}$$ and $$\frac{-5 - \sqrt{17}}{2}$$

8. Expand the Brackets

1. Expand the brackets to simplify the following:$$ (-\left(-2a + -4d\right)) $$
Correct Answer
$$ 2a + 4d $$
2. Expand the brackets to simplify the following:$$ -3\left(4g + 6A\right) $$
Correct Answer
$$ -12g - 18A $$

9. Expand the Brackets

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

10. Collect Like Terms

1. Collect like terms to simplify the following:$$ 5c + -3j + -4Z + 1j $$
Correct Answer
$$ 5c + -2j - 4Z $$
2. Collect like terms to simplify the following:$$ 6R + -6Q + 1v + -6Q $$
Correct Answer
$$ 6R + -12Q + v $$


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