10. Find the roots by factoring. a)a24a12=0 b)16a225=0 c)4u2+3u10=0 11. Given the quadratic: y = 4x2 + 4x 3 a) Determine the vertex by factoring. b) Determine the vertex by completing the square. c) Draw a good graph (minimum 5 points) 12. Solve using the quadratic formula. a) 3(x2)2+4(x+5)=30 b)(2x3)(x+4)=x213 2 2 _ c)3%=+2 d)x?=4x33+6 13. Find the max/min value of y = 3x2 30x 79 and the value of x when it occurs, by completing the square. 14. Solve each triangle: a)AFGH, AF =90, AG =24,f=28cm. b) AXYZ,x=15m,z=20m, AZ=40. c) APQR,p=12km,q=5km,r=8km