FLASHCARD - ELS TOPIC 1 (A-SSE)

Front

What is the formula to calculate the height of an object in free fall?

Back

h = -16t² + vt + h₀, where v is the initial velocity and h₀ is the initial height.

Front

How do you find the time when an object reaches a certain height using a quadratic equation?

Back

Set the height equation equal to the desired height and solve for t.

Front

What does factoring a quadratic expression involve?

Back

Finding two binomials that multiply to give the original quadratic expression.

Front

What is the vertex form of a quadratic equation?

Back

y = a(x - h)² + k, where (h, k) is the vertex of the parabola.

Front

How do you simplify the expression -8(5b + 2) - 7(b - 5)?

Back

Distribute and combine like terms to get -47b + 19.

Front

What is the significance of the coefficients in a quadratic equation?

Back

They determine the shape and position of the parabola on the graph.

Front

What does the term 'discriminant' refer to in a quadratic equation?

Back

The discriminant (b² - 4ac) determines the nature of the roots of the equation.

Front

How can you determine if a quadratic equation has real roots?

Back

If the discriminant is greater than or equal to zero, the equation has real roots.

Front

What is the process of completing the square?

Back

Rearranging a quadratic equation into the form (x - p)² = q to find its vertex.

Front

What does it mean for two expressions to be equivalent?

Back

They have the same value for all values of the variable.