Quadratic Equations and Triangle Theorems

Quadratic Equations and Triangle Theorems

Assessment

Interactive Video

Mathematics

9th - 10th Grade

Hard

Created by

Thomas White

FREE Resource

The video tutorial explains how to find the value of X in a right triangle where the hypotenuse is x^4 and the other two legs are x^2 and x^3. The instructor uses the Pythagorean theorem to set up an equation and then simplifies it using exponent rules. A quadratic equation is derived and solved using the quadratic formula, leading to the discovery that X is the square root of the golden ratio, approximately 1.272. The video concludes with a call to action for viewers to subscribe.

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8 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the hypotenuse of the right triangle in the problem?

x^2

x^4

x^3

x^5

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which theorem is used to solve for x in the triangle?

Pythagorean theorem

Fundamental theorem of calculus

Fermat's Last Theorem

Binomial theorem

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the expression for the hypotenuse squared in terms of x?

x^2

x^4

x^6

x^8

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is x^6 rewritten using the product rule of exponents?

x^5 * x

x^2 * x^4

x^3 * x^3

x^4 * x^2

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What common factor is taken out from the equation x^4 + x^4 * x^2 - x^4 * x^4?

x^2

x^3

x^4

x^5

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What substitution is made to simplify the quadratic equation?

U = x^4

U = x^3

U = x

U = x^2

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the quadratic formula used to solve for U?

U = (-b ± √(b²-4ac)) / 2a

U = (b ± √(b²+4ac)) / 2a

U = (b ± √(b²-4ac)) / a

U = (-b ± √(b²+4ac)) / a

8.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the final value of x in terms of the golden ratio?

x = (1 + √5) / 2

x = √(1 - √5) / 2

x = √(1 + √5) / 2

x = (1 - √5) / 2