what's the circumference of a circle is C centimetres. which expression best represents the value of pie?

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b