1 - a) x^2+10=36
b)x^2=36
x=-6 OR x=6
2 - a) 2x^2-20=3x
b) 2x^2-3x-20=0
2x^2-8x+5x-20=0
(2x+5)(x-4)=0
x=-5/2 OR x=4
