Answer + ! in the proof of the law of cosines, the equation c^2 = h^2 + (b - x)^2 was created using the pythagorean theorem. which equation is a result of expanding (b - x)^2? a. c^2 = h^2 + b^2 - x^2 b. c^2 = h^2 + b^2bx + x^2 c. c^2 = h^2 + b^2 + x^2 d. c^2 = h^2 + b^2 - 2bx - x^2

Option (d) is correct.

Step-by-step explanation:

Given : in the proof of the Law of Cosines, the equation  was created using the Pythagorean theorem.

We have to write the equation in expanded form by expanding and choose the correct option

Consider the given equation

We will expand using algebraic identity  

Here a= b and b = x

On simplify we get,

Thus equation becomes,

Thus, option (d) is correct.

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step-by-step explanation:

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