Need help fast please

Solve each quadratic equation by factoring and using the zero product property. [tex]x^2+6x+8=0[/tex]

Margaret is purchasing a house for $210,000 with a 15 year fixed rate mortgage at 4.75% interest she has made a 5% down payment the house is valued at 205,000 and the local tax rate is 3.5% homeowners insurance 600 per year what are her total monthly payment

What is the solution for 6 - 7/8? explain the steps.