Question

Uset he discriminant to find the type of solutions (to rational,two irrational,ot one rational) -4x2+9x+9=0

Answer 1

${b}^{2} - 4ac \\ ( {9)}^{2} - 4( - 4)(9) \\ 81 - 16(9) \\ 81 - 144 \\ - 63$
Two imaginary irrational solutions. Since 63 is not a perfect square that makes the solution irrational.