Answer:

1. x²-49=0 "Quadratic" (x=7 or x=-7)

2. 5x²+7x+2=0 "Quadratic" (x=-1 or x=-2/5)

3. 9+12x=-x² "Quadratic" (the standard form in this 3rd question is on the pic cause i don't know how to write it in here)

4. x²+8x³=16 "Not a Quadratic" (No standard form)

5. 2x(3x+5)=0 "Quadratic" (x=-5/3 or x=0)

Step-by-step explanation:

Hope it helps

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Answer:

Anong grade Po kayo aansweran ko Po yan

Step-by-step explanation:

identify which of the following equation are > Quadratic < and which are > Not < if the equation is write it in standard form