错题本：10 个由 AI 助手回答的问题

错题本：用中文提问、由 Doramagic.ai 的 AI 助手回答的问题，最新的在前。

  1. My 8th-grade daughter is taking Algebra
    2026-09-28 · 错题本

    My 8th-grade daughter is taking Algebra 1 and was working on rational expressions tonight. She was asked to simplify the expression: "Simplify: 1/a + 1/b" Witho

  2. My 7th-grade son was working on algebrai
    2026-09-27 · 错题本

    My 7th-grade son was working on algebraic expressions and combining like terms tonight. He was given the problem: "Simplify: 8 - (3x - 5)" He quickly wrote down

  3. My 8th-grade daughter was working on a u
    2026-09-27 · 错题本

    My 8th-grade daughter was working on a unit on radicals and the Pythagorean theorem tonight. She had an expression to evaluate: "Simplify sqrt(9 + 16)" She conf

  4. My 8th-grade son is practicing exponent
    2026-09-26 · 错题本

    My 8th-grade son is practicing exponent rules and polynomial operations in algebra. On his quiz yesterday, he got this question marked wrong: "Simplify: (2x^3)^

  5. My 7th-grade daughter is working on basi
    2026-09-26 · 错题本

    My 7th-grade daughter is working on basic algebraic expression simplification. On her algebra homework yesterday, she had the problem: "Simplify: 5 - 2(x + 3)"

  6. My 6th grader had this problem on yester
    2026-09-25 · 错题本

    My 6th grader had this problem on yesterday's decimal division homework: "Evaluate: 4.8 ÷ 0.06" His work showed: He shifted the decimal point two places to the

  7. My 6th grader had this problem on yester
    2026-09-25 · 错题本

    My 6th grader had this problem on yesterday's math homework: "Find the mean of the four science quiz scores: 85, 90, 0, 95." He added them up correctly to 270,

  8. My 8th-grade son is working on simplifyi
    2026-09-24 · 错题本

    My 8th-grade son is working on simplifying algebraic fractions in Algebra 1. On his test today, he had these two problems: 1) Simplify (2x + 8) / 2 -> He wrote:

  9. My 7th-grade daughter is working on rati
    2026-09-24 · 错题本

    My 7th-grade daughter is working on ratios and proportions. On her homework yesterday, she had this problem: "A recipe calls for a ratio of 2 cups of sugar to 5

  10. My 8th-grade son is working on polynomia
    2026-09-24 · 错题本

    My 8th-grade son is working on polynomial multiplication in Algebra 1. On his homework and quiz, he repeatedly writes: 1) (x + 5)^2 = x^2 + 25 2) (2a - 3)^2 = 4