1. Which of the following is a quadratic equation? A 2x2 + 4x - 1 B. x2+5x-4 = 0 C. 3x-7 = 2 D. 2x2 - 7x ≥ q 2 2. In the equation ax2+bx+c=0 , which of the following cannot be equal to 0? A.a B.b C.c D.x 3. Which of the following quadratic equations is written in standard form? A. x2-5=x C. 3x2+4x-5=0 B. x2=9 D. x2-x=6 4. Which of the following quadratic equations is in standard form? A. 3x2-4=10x C. 2x2+4x-20=0 B. x2+6x-12=24 D. x-14=x2 5. In the quadratic equation 4y2-3y=-18 , what are the values of the real numbers ak and c? A. a=4 b=-3 c=-18 C. a=4 b=-3 c=18 B. a=4 b=-3 c=-18 D. a=4 b=3 c=18 6. What is the nature of the roots of the quadratic equation, x2+2x-15=0 A. roots are not equal and irrational B. roots are not equal and rational C. roots are equal and reals D. roots are not reals
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