Answer:
1. (2x^2+x-1)
Step-by-step explanation:
expanding (2x^2-1)^2. multiplying (x-2) (1-2x)
= 4x^2-4x+1. = x-2x^2-2+4x
= -2x^2+5x-2
(4x^2-4x+1-2x^2+5x-2)
=2x^2+x-1
Answer:
Wilhem
Step-by-step explanation:
The given equation is

Step 1 : Add 32g and 8g.



Step 2: Subtract 10 from 40.


Step 3: Divide both sides by 30, find the value of g.


The value of g is 5.
Therefore, Wilhem is correct.
Answer:
49 cm²
Step-by-step explanation:
The volume (V) of a cube is calculated as
V = s³ ← s is the length of the side, thus
s³ = 343 ( take the cube root of both sides )
s =
= 7, thus
area of base = s² = 7² = 49 cm²
Step-by-step explanation:
davis is right.
He is false the equation should be as follows