3(2x - 3) = -6x + 9 what is the solution?

Solve each quadratic equation by factoring and using the zero product property. x^2 - 8x + 30 = 3x

The pyraminx is a rubik's cube-type toy in the shape of a tetrahedron. the pyraminx shown below has edges 15\,\text{cm}15cm long and vertical height h=12.2\,\text{cm}h=12.2cm. the triangle drawn with dashed lines is a right triangle. what is the distance rr? round your answer to the nearest tenth.

Whats is the value of the variables ?