Tell me if i did these correctly and i will mark you brainiest

First one is correct, second was is correct, third one is correct, fourth one is correct, fifth one is correct, sixth one is correct, seventh one is 35 percent , next is 80 percent and then 126 percent

Answer to your question: a. the fundamental theorem of algebra tells you that the equation will have two complex roots since the degree of the polynomial is 2. the roots are ​ x=1±i7√2 .number of roots=degree of polynomialhere, degree of polynomial is 2 so number of roots will be 2.hope it *_*