What is the decimal multiplier to increase by 81%

What is the missing constant term in the perfect square that starts with x^2 -20x

Enter the number of complex zeros for the polynomial function f(x) = x 4+ 5x² +6

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (-4, 0) and (6,0). the y-intercept of thefirst parabola is (0, –12). the y-intercept of the second parabola is (0-24). what is the positive difference between the avalues for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth.