which of the following is a quadratic equation?
A. 4b-7=6
B. 9x²+3x-1<5
C. 7x²+3x>9
D. y²+5y-18=0
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which of the following is a quadratic equation?
A. 4b-7=6
B. 9x²+3x-1<5
C. 7x²+3x>9
D. y²+5y-18=0
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Answer:
IT'S letter D
y²+5y-18=0
The correct answer is D
You easily find quadratic equation if it is has a "² or 2 squared"
and base to your question it has a 3 answer that have a 2 squared,
quadratic equation is always have a equal/= so the answer is D