Solve 5x2 + 25 = 0 (question from algebra 1)

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1

Which graph represents the function g(x) = |x + 4| + 2?

Me! i will mark brainliest! i don't get polynomials and all that other stuff. so this question is really hard. multiply and simplify.(x - 4) (x^2 – 5x – 6)show your