Solving a natural logarithmic equation using the quadratic formula

Solving a natural logarithmic equation using the quadratic formula

Assessment

Interactive Video

Mathematics

11th Grade - University

Hard

Created by

Quizizz Content

FREE Resource

The video tutorial explains how to solve an equation with two logarithms on one side by combining them using logarithmic properties. It then demonstrates converting the equation to exponential form and explores options for solving the resulting quadratic equation. The quadratic formula is applied, and the solutions are analyzed, leading to the conclusion that only one solution is valid.

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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in solving an equation with two logarithms on one side?

Convert the logarithms to exponential form

Condense the logarithms into a single logarithm

Add a constant to both sides

Subtract a constant from both sides

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is factoring not a feasible method for solving the quadratic equation in this example?

The equation has no real roots

The numbers do not multiply to give a rational result

The equation is already factored

The equation is not in standard form

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which method is chosen to solve the quadratic equation in this example?

Graphing

Quadratic formula

Completing the square

Factoring

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the final solution to the equation after applying the quadratic formula?

X = 1 - sqrt(1 + E)

X = 1 + sqrt(1 + E)

X = -1 + sqrt(1 + E)

X = -1 - sqrt(1 + E)

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is one of the solutions not valid in this example?

It results in an undefined value

It results in a zero

It results in a negative number

It results in a complex number