Polynomials Tes...

Find roots of equation $$\displaystyle { a }^{ 4 }{ x }^{ 2 }-{ b }^{ 4 }=0$$

$$p(x) = \dfrac{37}{15}$$ is a _______ polynomial.

Is $$\displaystyle x=-10$$ is a solution of $$\displaystyle { x }^{ 2 }+5x-9=0$$?

Is $$\displaystyle x=\dfrac { 5 }{ 2 } $$  a solution of $$\displaystyle \left( 6x+16 \right) \left( 4x+10 \right) =0$$?

Is $$\displaystyle x=-4$$ is a solution of equation  $$\displaystyle { x }^{ 2 }-x-20=0$$?

Which of the following is INCORRECT?

Is $$x=9$$  a solution of $$\displaystyle { x }^{ 2 }-63-2x=0$$?

Is $$x=-1$$  a solution of $$\displaystyle { x }^{ 2 }+x+1=0$$?

$$\displaystyle x=\frac { 4 }{ 3 } $$ is a root of equation $$\displaystyle { x }^{ 2 }-\frac { 16 }{ 9 } =0$$

$$p(x) = 25 $$ is a _______ polynomial.