Câu hỏi: Cho P(x)=–3×2+2x+1; Q(x)=–3×2+x–2.Tính P(x)–Q(x). A. P(x)–Q(x)=x+3. Đáp án chính xác B. P(x)–Q(x)=x–3. C. P(x)–Q(x)=–6×2+x–1. D. P(x)–Q(x)=–6×2+x+3. Trả lời: Đáp án cần chọn là A.Ta có:P(x)–Q(x)=–3×2+2x+1––3×2+x–2=–3×2+2x+1+3×2–x+2=–3×2+3×2+2x–x+3=x+3. ====== **** mời các bạn xem câu tiếp bên dưới **** ===== Link Hoc va de thi 2021
Câu hỏi: Chọn câu phát biểu đúng A. Hai đường thẳng cắt nhau tạo thành hai cặp góc đối đỉnh Đáp án chính xác B. Ba đường thẳng cắt nhau tạo thành ba cặp góc đối đỉnh C. Bốn đường thẳng cắt nhau tạo thành bốn cặp góc đối đỉnh D. Cả A, B, C đều đúng Trả lời: […]
Superintendent Kristen Stingfellow speaks Tuesday, June 13, 2023, during a Norwich Board of Education meeting at Kelly Middle School. (Dana Jensen/The Day) Buy Photo Reprints Norwich ― After hearing allegations of a hostile working climate of intimidation, threats and fear, the Board of Education delayed releasing a written evaluation of Superintendent Kristen Stringfellow to allow […]
WASHINGTON — The inaugural launch of United Launch Alliance’s Vulcan Centaur rocket faces new delays after the company said it needs to make “minor reinforcements” to part of the Centaur upper stage. In a brief statement early June 24, ULA said it would remove the Centaur upper stage that had been installed on the Vulcan […]
Amy’s Printable Shop is an Etsy shop established in 2017 that specializes in printable inserts, calendars, gifts, and trackers. Each journal comes with three unique pages, two cover pages and a standard day tracking page. Each tracking page includes a space for the date, weather, temperature, conditions, and humidity as well as sleep, pain, brain […]
ST. PETERSBURG, Fla. — One of the biggest events of the year is in St. Petersburg this weekend: The city’s 21st pride parade and festival, which is expected to draw in hundreds of thousands of people. What You Need To Know The St. Pete Pride parade and festival is Florida’s largest pride celebration Event organizers […]
Câu hỏi: Tìm x {55; 67; 79; 84} sao cho x – 12 chia hết cho 3. A. x = 55; B. x = 67; C. x = 79; D. x = 84. Đáp án chính xác Trả lời: Đáp án DVì 12 = 3.4 nên 12 chia hết cho 3.Do đó để x – 12 […]
A movement, known as classical education, has been gaining popularity across the country, coinciding with more Americans seeking alternatives to the public education system. This learning style is aimed at instilling knowledge, as well as virtue in students. There are now over 200 charter programs with a classically-oriented bent. The phenomenon has gained steam in […]
Câu hỏi: Tìm x để x⋮5,x⋮7 và 0 < x ≤ 70. Có bao nhiêu giá trị của x thỏa mãn điều kiện trên? A. 0; B. 1; C. 2; Đáp án chính xác D. 3. Trả lời: Đáp án CVì x⋮5 và x⋮7 nên x là bội chung của 5 và 7.Do 5 và 7 là hai số […]
Micron hosted the program Girls Going Tech at the MOST in Syracuse on Saturday, June 24.The program allowed for middle-school aged girls to get introduce to dif Source link Link Hoc va de thi 2021