(a + b)^3 = a^3 + 3a^2b + 3ab^2+ b^3
(a +(- b))^3 = (a-b)^2 = a^3 - 3a^2b + 3ab^2- b^3
Idk what linear combination is but you can solve this way:
3x+y=4
-2x-y=-5
x=-1
3(-1)+y=4
-3+y=4
y=7
So x=-1 and y=7
Answer:
Step-by-step explanation:
Acute : An acute triangle is one in which all the angles less than 90 degree.
Right: Any triangle whose one angle measure is 90 degrees is called Right angled triangle.
Obtuse angle: Any triangle whose one angle measures more than 90 degrees is called Obtuse angled triangle.
Equilateral : Any triangle whose all the sides are equal are called equilateral triangle. They also have all the angle equal which measures 60 degrees.
Scalene triangle : The triangle whose length of all the sides are different from each other are called scalene triangle.
Isosceles : the triangle whose two sides length are equal are called Isosceles triangle.
Answer:
rectangle, square, isosceles trapezoid
Step-by-step explanation:
