1.) Which is not a quadratic equation? a.) x²+3x+4=0 b.) 2x²46x=10 c.) x²+8=-4x d.) 6x+4=0 2.) All is a perfect square trinomial except a.) x²+8x+16=0 c.) x²+4x+8=0 c.) 4x²+12X=-9 d.) 6x+4=0 3.) What is the value of "a" in the equatic c.) 10 d.)25 a.) 0 b.) 1 v² Ay to m​