4z2+8z+4=0 is it soluton or no solution or two real solution

On a architect's drawing of a house, 1 inche representa 1.5

In parallelogram abcd the ratio of ab to bcis 5: 3. if the perimeter of abcd is 32 find ab

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0