Решите 4 и 5 задание.. Created by ledomdom. algebra-ru

4.(x²-1)²+6=16-2x²Пусть х²=а(а-1)²+6=16-2аа²-2а+1+6=16-2аа²-2а+2а=16-7а²=9а₁=3 а₂=-3х²=3 х²=-3х₁=√3 нет решений.х₂=-√3Ответ: -√3; √3.5. х²-26х+q=0x₁=12x₂-? q-?По т.Виета:{х₁+х₂=26 {12+x₂=26 {x₂=14{х₁*х₂=q {12x₂=q {q=12*14=168Ответ: х₂=14 q=168Новые вопросы в АлгебраСколькими способами можно рассадить 5 мальчиков и 3 девочки на 8 стульях, стоящих в один ряд, чтобы все девочки не сидели рядом. Пожалуйста, помогите…решить.3×(a-b-c)+5×(a-b)+3c=8×(a-b)Допоможіть будь ласка!Якщо можна з поступовим поясненнямДякую!m+3 n+3 якщо m>n порівняйте числазависимость y от х задана таблицей. Найдите ее область определения и область значения. Определите, является ли эта зависимость функцией. Постройте гра…фик этой зависимостих -4 -1 3 4 -4у -3 -2 1 -2 3найти производную соs²xНадо решить системы уравнений ( не графичным способом)125a⁸b⁴-20a⁶b⁵______________15a⁵b⁴Упростите помогите пжпжпжпжрж((7^2005)+(7^2004)+8)/((7^2004)+1)Найдите сумму всех значений n (n принодлежит N) при которых значение n^2-2n+3/n+2 натуральное число.Быстро пожалуйстаПредыдущийСледующийВместе мы знаем большеЭтот сайт использует cookies Политика Cookies . 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Решите 4 и 5 задание...

ledomdom @ledomdom

August 2022 1 9 Report

Решите 4 и 5 задание.

Answers & Comments

m11m 4.
(x²-1)²+6=16-2x²
Пусть х²=а
(а-1)²+6=16-2а
а²-2а+1+6=16-2а
а²-2а+2а=16-7
а²=9
а₁=3
а₂=-3
х²=3 х²=-3
х₁=√3 нет решений.
х₂=-√3
Ответ: -√3; √3.

5. х²-26х+q=0
x₁=12
x₂-? q-?
По т.Виета:
{х₁+х₂=26 {12+x₂=26 {x₂=14
{х₁*х₂=q {12x₂=q {q=12*14=168
Ответ: х₂=14
q=168