Maths Exam

1. Expand the Brackets

1. Expand the brackets to simplify the following:$$ 5\left(-3e + 5y\right) $$
Correct Answer
$$ -15e + 25y $$
2. Expand the brackets to simplify the following:$$ 3\left(-5P + 6Y\right) $$
Correct Answer
$$ -15P + 18Y $$

2. Expand the Brackets

1. Expand the brackets to simplify the following:$$ {\left(3x + -5f\right)}^{2} $$
Correct Answer
$$ 9{x}^{2} - 30xf + 25{f}^{2} $$
2. Expand the brackets to simplify the following:$$ {\left(6g + -4d\right)}^{2} $$
Correct Answer
$$ 36{g}^{2} - 48gd + 16{d}^{2} $$

3. Collect Like Terms

1. Collect like terms to simplify the following:$$ -6X + 3j + -3n + 6j $$
Correct Answer
$$ -6X + 9j - 3n $$
2. Collect like terms to simplify the following:$$ 3g + -3y + -2u + 4y $$
Correct Answer
$$ 3g + y - 2u $$

4. Adding fractions

1. Simplify the following:$$ \frac{5x + 3}{-6x + 2} + \frac{1x + -3}{-5x + -1} $$
Correct Answer
$$ \frac{-31{x}^{2} - 9}{30{x}^{2} - 4x - 2} $$
2. Simplify the following:$$ \frac{4x + -4}{-4x + -4} + \frac{-3x + -2}{-4x + -4} $$
Correct Answer
$$ \frac{-4{x}^{2} + 24 + 20x}{16{x}^{2} + 32x + 16} $$

5. Evaluate the following equations.

1. Find B to 3 significant figures in the following equation: $$ B = \cos\left(-6x + yz\right),$$ Given that x = -2.0, y = 1.0, z = 1.0
Correct Answer
0.907
2. Find h to 3 significant figures in the following equation: $$ h = \sin\left(yz\right)\ln\left(\sin\left(x\right)\right),$$ Given that x = 1.0, y = 2.0, z = 6.0
Correct Answer
0.0926

6. Rearrange the following equation.

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

7. Quadratic Equation

Solve the following equation to get a value for x:$$3{x}^{2} + -5x + -1 = 0$$
Correct Answer
$$\frac{5 + \sqrt{37}}{6}$$ and $$\frac{5 - \sqrt{37}}{6}$$

8. Expand the Brackets

1. Expand the brackets to simplify the following:$$ -6\left(4i + -2j\right) $$
Correct Answer
$$ -24i + 12j $$
2. Expand the brackets to simplify the following:$$ 6\left(-3e + -3h\right) $$
Correct Answer
$$ -18e - 18h $$

9. Expand the Brackets

1. Expand the brackets to simplify the following:$$ {\left(-3a + 4f\right)}^{2} $$
Correct Answer
$$ 9{a}^{2} - 24af + 16{f}^{2} $$
2. Expand the brackets to simplify the following:$$ {\left(4g + 6b\right)}^{2} $$
Correct Answer
$$ 16{g}^{2} + 48gb + 36{b}^{2} $$

10. Collect Like Terms

1. Collect like terms to simplify the following:$$ 2R + -2f + 1z + -2f $$
Correct Answer
$$ 2R + -4f + z $$
2. Collect like terms to simplify the following:$$ 1x + 3h + 5m + 2h $$
Correct Answer
$$ x + 5h + 5m $$


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