I am stuck on simplifying four problems, I cannot figure out which steps i need to make. Can you please help me.

Question

6x^4 - 8
2a² + a²b + ab + 1
12m²p + 35nq³
a²b - a² - 2b -2

Answer 1

What do you mean by "simplify?" Express in factor form?

6x^4 - 8 = 6(x^4 -4/3)
= 6[x^2 + sqrt(4/3)]{x^2 - sqrt(4/3)]
The last term in brackets fan be factored one more.

a²b - a² - 2b -2 = a^2(b-1) -2(b+1)

Those don't look any "simpler" than the original versions.