Mathematics

28 June, 02:54

Which operation is performed in the derivation of the

quadratic formula moving from Step 6 to Step 7?

Two of the steps in the derivation of the quadratic

formula are shown below.

Step 6:

-40C

40

subtracting b from both sides of the equation

2a

Step 7: IVb2-4ac

=X+

2a

20

squaring both sides of the equation

taking the square root of both sides of the equation

taking the square root of the discriminant

+2

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