1.which of the following describes a solution to a kinetic equation? A.formula B.discriminant C.function D.roots
2.which statement is/are about quadratic equation ?
I. the roots of a quadratic equation are always rational numbers
II. the form of quadratic equation is denoted by ax²+bx+c=0 where a,b,c are real numbers and a≠0
III. all quadratic equation can be line or equations.
A.I only B.II only C.III only D.I and II
3.which of the following equations can be solved easily by extracting square roots?
A.x²-8x+12=0
B.w²-81=0
C.4t²-40=24
D.9y²= -21y-54​