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10 questions
w2+7w+4=0w^2+7w+4=0w2+7w+4=0
−7±332\frac{-7\pm\sqrt{33}}{2}2−7±33
−7±652\frac{-7\pm\sqrt{65}}{2}2−7±65
7±332\frac{7\pm\sqrt{33}}{2}27±33
−7±3112\frac{-7\pm3\sqrt{11}}{2}2−7±311
5x2+3x−3=05x^2+3x-3=05x2+3x−3=0
−3±i5110\frac{-3\pm i\sqrt{51}}{10}10−3±i51
−3±6910\frac{-3\pm\sqrt{69}}{10}10−3±69
3±692\frac{3\pm\sqrt{69}}{2}23±69
−3±32310\frac{-3\pm3\sqrt{23}}{10}10−3±323
2y2+2=9y2y^2+2=9y2y2+2=9y
−9±652\frac{-9\pm\sqrt{65}}{2}2−9±65
9±5134\frac{9\pm5\sqrt{13}}{4}49±513
9±654\frac{9\pm\sqrt{65}}{4}49±65
−9±−974\frac{-9\pm\sqrt{-97}}{4}4−9±−97
x2−6x+4=0x^2-6x+4=0x2−6x+4=0
3±53\pm\sqrt{5}3±5
6±202\frac{6\pm\sqrt{20}}{2}26±20
3±203\pm\sqrt{20}3±20
3±i133\pm i\sqrt{13}3±i13
t2+4t=2t^2+4t=2t2+4t=2
−4±242\frac{-4\pm\sqrt{24}}{2}2−4±24
4±264\pm2\sqrt{6}4±26
−2±6-2\pm\sqrt{6}−2±6
4±382\frac{4\pm3\sqrt{8}}{2}24±38
3x2+5x+9=−5x+43x^2+5x+9=-5x+43x2+5x+9=−5x+4
−5±103\frac{-5\pm\sqrt{10}}{3}3−5±10
−10±406\frac{-10\pm\sqrt{40}}{6}6−10±40
−5±53\frac{-5\pm\sqrt{5}}{3}3−5±5
5±i53\frac{5\pm i\sqrt{5}}{3}35±i5
y2=−9−9yy^2=-9-9yy2=−9−9y
−9±1172\frac{-9\pm\sqrt{117}}{2}2−9±117
9±452\frac{9\pm\sqrt{45}}{2}29±45
−9±352\frac{-9\pm3\sqrt{5}}{2}2−9±35
9±532\frac{9\pm5\sqrt{3}}{2}29±53
2d2+4=5d2d^2+4=5d2d2+4=5d
5±i74\frac{5\pm i\sqrt{7}}{4}45±i7
−5±74\frac{-5\pm\sqrt{7}}{4}4−5±7
5±i574\frac{5\pm i\sqrt{57}}{4}45±i57
−5±572\frac{-5\pm\sqrt{57}}{2}2−5±57
3n2−8n+3=−43n^2-8n+3=-43n2−8n+3=−4
8±206\frac{8\pm\sqrt{20}}{6}68±20
4±i53\frac{4\pm i\sqrt{5}}{3}34±i5
8±5i26\frac{8\pm5i\sqrt{2}}{6}68±5i2
4±−203\frac{4\pm\sqrt{-20}}{3}34±−20
2x2+2x+5=02x^2+2x+5=02x2+2x+5=0
−1±3i2\frac{-1\pm3i}{2}2−1±3i
−1±i112\frac{-1\pm i\sqrt{11}}{2}2−1±i11
2±404\frac{2\pm\sqrt{40}}{4}42±40
−1±i62\frac{-1\pm i\sqrt{6}}{2}2−1±i6
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