An equation is used to show 2 expressions that are equal to each other.

Equations which represent different relationships between the same variables are called simultaneous equations.

Using the fx-CG50 for number and algebra

Maths

This unit teaches how to use scientific calculators and expores their functionality

Use your calculator to solve $$a^2 - 12a + 11 = 0$$

Use your calculator to solve $$x^2 + 6x + 8 = 3$$

Use your calculator to solve $$x^2 + 12x - 15 = 4x + 5$$

For the formula $$v = u + at$$, what is the value of $$a$$ when $$v = 20, u = 4$$ and $$t = 4$$?

For the formula $$Q = \frac{f}{s - v}$$, what is the value of $$s$$ when $$v = 5, f = 16\;000$$ and $$Q = 45\;000$$? Give your answer to 2 d.p.

For the formula $$A = 2\pi r^2 + 2\pi rh$$, what is the value of $$r$$ when $$A = 756$$ and $$h = 22$$? Give your answer to 2 d.p.

An {{}} is used to show 2 expressions that are equal to each other.

Equations which represent different relationships between the same variables are called {{}} equations.

A {{}} is an equation, graph, or sequence whereby the highest exponent of the variable is 2.

True - you have to rearrange to make the variable the subject.

False - equations can only be solved by guessing.

False - equations can be solved graphically.

Equations can only be solved numerically.

Solve to find the value for $$a$$ that satisfies $$2a + 7 = 1$$

Solve to find the values of $$x$$ that satisfy the equation $$4x^2 + 20x + 21 = 0$$