Check if the following equality is true for all values of variables:

(1–2b)(1–5b+b^2 )+(2b–1)(1–6b+b^2 )=b(1–2b)
find:

the expanded form of the left − hand side is

the expanded form of the right − hand side is

so the equality(is/is not) true for all values of the variable.

Consider a cube that has sides of length l. now consider putting the largest sphere you can inside this cube without any point on the sphere lying outside of the cube. the volume ratio -volume of the sphere/ volume of the cube is 1. 5.2 × 10−1 2. 3.8 × 10−1 3. 1.9 4. 2.5 × 10−1 5. 3.8