5272道题目5525 条题源记录 · 相同内容已合并
二次式展开・配方与等价形式挑战
\( f(x)=-3x^2+30x-48 \)
The function \( f \) is defined by the given equation. Which of the following equivalent forms of the equation displays the maximum value of the function as a constant or coefficient?
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二次式展开・配方与等价形式进阶
Which expression is equivalent to \( 5xy+30x^2y+35xy^2 \) ?
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二次式展开・配方与等价形式进阶
\( \left(2x^2+3x-3\right)-\left(7x^2+2x\right) \)
The given expression is equivalent to \( -5x^2+ax-3 \), where a is a constant. What is the value of a?
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二次式展开・配方与等价形式进阶
Which expression is equivalent to \( 2x^3+8x^2y+xy^2+4y^3 \)?
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二次式展开・配方与等价形式挑战
Which expression is equivalent to \( 14(x^2-6) \)?
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二次式展开・配方与等价形式挑战
\( y=7x^2-bx-6 \)
Which of the following equations is equivalent to the given equation, where b is a positive constant?
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二次式展开・配方与等价形式挑战
\( y=7x^2-bx-6 \)
Which of the following equations is equivalent to the given equation, where b is a positive constant?
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二次式展开・配方与等价形式挑战
Which expression is equivalent to \( 12x^3+30x^2y+12xy+30y^2 \) ?
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二次式展开・配方与等价形式挑战
If \( \left(x+2\right)^2=18 \), what is the value of \( x^2+4x \) ?
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二次式展开・配方与等价形式挑战
Which expression is equivalent to \( (3x^3-4x+9)-(6x^6+8x-4) \)?
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二次式展开・配方与等价形式挑战
Which expression is equivalent to \( 9yz^3+6yz+3yz^3 \)?
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二次式展开・配方与等价形式进阶
Which expression is equivalent to \( 60x^2-70 \)?
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