Question

Which of the following equations are quadratic?
a. (x^2+1)^2=x&4
b. (x+1)&2=x^2
c.(5x^2+2x)-(7+5x^2)=x^2+2
d. (x+2)^3=4-x&3
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Answer 1

Answer:

c.is the correct answer

Answer 2

C. is the correct answer