Polynomials Tes...

Find the square of:

If the value of the polynomial $$x^3+2x^2-ax+1$$ at $$x = 2$$ is 11, then find the value of a.

Evaluate: $$\displaystyle\left(\dfrac{7}{8}{x}\, +\, \dfrac{4}{5}{y}\right )^{2}$$.

Find the value of the polynomial

Find the square of the following number: $$998$$

Verify that the numbers given along side of the polynomial are their zeros. $$x^4+2x^3-7x^2-8x+12; -3, -2, 1, 2$$

What is the zero of the binomial $$ax + b$$?

What is the value of $$\displaystyle { ax }^{ 2 }+bx+c$$ at $$\displaystyle x=\frac { -b }{ a } $$?

Which of the number $$1, \ -1 $$ and $$-3$$ are zeroes of the polynomial $$2x^4+9x^3+11x^2+4x-6$$?