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Answers for “如何将系数代入求根公式?”

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To substitute coefficients into the quadratic formula, first identify aa, bb, and cc from the standard form ax2+bx+c=0ax^2 + bx + c = 0. Replace aa, bb, and cc in the formula x=−b±b2−4ac2ax = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} with their numerical values.

Conditions: The equation is in standard form ax2+bx+c=0ax^2 + bx + c = 0.; The coefficients aa, bb, and cc have been correctly identified.

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To simplify a fraction, find a common factor for both the numerator and the denominator. Rewrite them as products including this common factor, then cancel the common factor from the top and bottom.

Conditions: The numerator and denominator must share a common factor greater than 1.; The fraction is not yet in its simplest form.

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Yes, consider the equation 6x2−17x+12=06x^2 - 17x + 12 = 0. The coefficients are a=6a=6, b=−17b=-17, and c=12c=12.

Conditions: The quadratic equation has at least one negative coefficient.; The equation is in standard form ax2+bx+c=0ax^2 + bx + c = 0.