write each quadratic equation in standard form then identify the values of a, b, c 1.(x+3)(x-3)=0​

Sagot :

(x+3) (x-3)=0

FOIL METHOD

First: x²

Outside:-3x

Inside: 3x

Last: -9

-3x+3x -9=0

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cancel

Standard form: x²-9=0

A: x²

B: 0

C: -9