Mathematics, 15.06.2020 23:57 isabel81ie
Zacharias is using the quadratic formula to solve the equation 0 = –2x2 + 5x – 3. He begins by substituting as shown.
Quadratic formula: x = StartFraction negative b plus or minus StartRoot b squared minus 4 a c EndRoot Over 2 a EndFraction
Substitution: x = StartFraction negative 5 plus or minus StartRoot 5 squared minus 4(2)(negative 3) EndRoot Over 2(negative 2) EndFraction
What error did Zacharias make?
Answers: 1
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Zacharias is using the quadratic formula to solve the equation 0 = –2x2 + 5x – 3. He begins by subst...
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