What is 4x^2 + 12x - 6 = 0 rewritten in x^2 + b/a = -c/a format?

Sadie computes the perimeter of a rectangle by adding the length, l, and width, w, and doubling this sum. eric computes the perimeter of a rectangle by doubling the length, l, doubling the width, w, and adding the doubled amounts. write an equation for sadie’s way of calculating the

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Anna is constructing a line segment that is congruent to another segment ab. for the construction, which tool should be used to mesure segment ab