Question

1. ( a^{2}=h^{2}+x^{2} ) pythagorean theorem
2. ( h^{2}= ) rearrange the previous statement ( a^{2}-x^{2} )
3. ( c^{2}=h^{2}+ ) pythagorean theorem ( (b - x)^{2} )
4. ( c^{2}=h^{2}+ ) ( b^{2}-2bx + x^{2} )

Explanation:

planation:

Step1: Expand \((b - x)^2\)

According to the formula \((m - n)^2=m^{2}-2mn + n^{2}\), when \(m = b\) and \(n=x\), we have \((b - x)^2=b^{2}-2bx+x^{2}\)

Answer:

Expand \((b - x)^2\)