An unknown number, we'll call it B, is the same number as an unknown number C times 2.
b divided by 2
If a = -15, b = 5 and c = -2 a - b - c = -15 - 5 - (-2) = -20 + 2 = -18
a + c - b = 3 + 2 - 5 = 5 - 5 = 0
7.5
b = sqrt32 or 4 root 2
b divided by 2
If a = -15, b = 5 and c = -2 a - b - c = -15 - 5 - (-2) = -20 + 2 = -18
a + c - b = 3 + 2 - 5 = 5 - 5 = 0
7.5
b = sqrt32 or 4 root 2
a = 2b - c a + c = 2b (a+c)/2 = b b = (a+c)/2
It equals to a low B 4 = A 3 = B 2 = C 1 = D 0 = F
The Pythagoream Thereom is a^2 + b^2 = c^2. Written out it is a squared plus b squared equals c squared.
a=-2 4b=-2 --> b=-1/2 c=8 (-2)(-1/2)(8)(3)= 24
a - b = c -(a - b) = -c b - a = -c
2
a^2 + b^2 + c^2 - ab - bc - ca = 0=> 2a^2 + 2b^2 + 2c^2 - 2ab - 2bc - 2ca = 0 => a^2 - 2ab + b^2 + b^2 - 2bc + c^2 + c^2 - 2ca + a^2 = 0 => (a - b)^2 + (b - c)^2 + (c - a)^2 = 0 Each term on the left hand side is a square and so it is non-negative. Since their sum is zero, each term must be zero. Therefore: a - b = 0 => a = b b - c = 0 => b = c.