Question

A student is deriving the quadratic formula. Her first two steps are shown.
Step 1: –c = ax2 + bx
Step 2:
Which best explains or justifies Step 2?
division property of equality
factoring the binomial
completing the square
subtraction property of equality

Answer 1

Answer:

Subtraction property of equality

Step-by-step explanation:

-c = ax² + bx

By subtraction property, subtract -c from both sides

-c -(-c) = ax² + bx - (-c)

0 = ax² + bx + c , which is the standard form of a quadratic equation

Answer 2

Answer: B

Step-by-step explanation: 2021 Edgenuity