Mathematics, 29.05.2020 04:59 shawk1468

Some of the steps in the derivation of the quadratic formula are shown.

Step 3: –c + StartFraction b squared Over 4 a EndFraction = a(x squared + StartFraction b Over a EndFraction x + StartFraction b squared Over 4 a squared EndFraction)

Step 4a: –c + StartFraction b squared Over 4 a EndFraction = a(x + StartFraction b Over 2 a EndFraction) squared

Step 4b: negative StartFraction 4 a c Over 4 a EndFraction + StartFraction b squared Over 4 a EndFraction = a(x + StartFraction b Over 2 a EndFraction) squared

Which best explains or justifies Step 4b?

A. factoring a polynomial
B. multiplication property of equality
C. converting to a common denominator
D. addition property of equality

Answers: 1

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Some of the steps in the derivation of the quadratic formula are shown.

Step 3: –c + Sta...