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2014-04-11T21:55:45+03:00
9x∧2-24x+16+20=5(x∧2+2x+1)+4x∧2-12x+9
9x∧2-24x+36=5x∧2+10x+5+4x∧2-12x+9
9x∧2-24x-5x∧2-10x-4x∧2+12x=-36+9+5
4x∧2-4x∧2-22x=-22
-22x=-22
x=1