Se x .y = 2 e x + y = 9, então x² + y² é :
a) 76
b) 167
c) 77
d...
Mathematics, 06.07.2020 16:01 toddb8106
Se x .y = 2 e x + y = 9, então x² + y² é :
a) 76
b) 167
c) 77
d) 169
e) 85
Classifique cada sentença em verdadeira ou falsa:
( ) ( a +b )² = a² + 2ab + b²
( ) ( a - b )² = a² - 2ab + b²
( ) ( a + b ) .( a – b) = a² + b²
( ) ( a +b)³ = a³ + 3a²b + 3ab² + b³
( ) ( a -b)³ = a³ - 3a²b + 3ab² - b³
Fatore cada polinômios de acordo com o caso:
a) m² - 14am + 49a² =
b) m2 – 9n² =
c) 30+ 5xy + 12a +2axy =
d) 8a²b + 10ab²
Answers: 1
Mathematics, 21.06.2019 17:00
Find the area of a parallelogram with the given vertices. p(-2, -5), q(9, -5), r(1, 5), s(12, 5)
Answers: 1
Mathematics, 21.06.2019 18:00
Which statement about the relative areas of δabc and δxyz is true? the area of δabc > the area of δxyz the area of δabc < the area of δxyz the area of δabc = the area of δxyz more information is needed to compare.
Answers: 2
Mathematics, 21.06.2019 20:30
Janet is rolling a number cube with the numbers one through six she record the numbers after each row if she rolls of keep 48 times how many times should she expect to roll a 4
Answers: 1
Mathematics, 21.06.2019 22:10
Akitchen is 12 ft. by 14 ft. with 10 ft. high walls. how much would it cost to put vinyl flooring in this room? $8.80 per ft
Answers: 1
Mathematics, 28.10.2019 00:43
History, 28.10.2019 00:43
Health, 28.10.2019 00:43
History, 28.10.2019 00:43
Computers and Technology, 28.10.2019 00:43
Mathematics, 28.10.2019 00:43
Geography, 28.10.2019 00:43
Mathematics, 28.10.2019 00:43
History, 28.10.2019 00:43
Social Studies, 28.10.2019 00:43
Mathematics, 28.10.2019 00:43
Biology, 28.10.2019 00:43
Physics, 28.10.2019 00:43