Need some more help with these problems

Find all real solutions of the equation.

x^2 + x - 30 = 0

theres a smaller and larger solution

Find all real solutions of the equation. (If there is one solution with a multiplicity of two, enter it in both answer boxes.)

10x^2 + 60x + 90 = 0

on this one i found the smaller solution is -3 but i dont know the larger

dont worry about the boxes thing

Find all real solutions of the equation.

w^2 = 4(w + 5)

two answers again here

Solve the equation for x. (If there is one solution with a multiplicity of two, enter it in both answer boxes.)

a^2x^2 + 8ax + 16 = 0

Find all values of k that ensure that the given equation has exactly one solution.

6x^2 + kx + 9 = 0

A wire 370 in. long is cut into two pieces. One piece is formed into a square and the other into a circle. If the two figures have the same area, what are the lengths of the two pieces of wire?

any help would be greatly appreciated!

thanks