Write (p+2q + r)^2 in expanded form​

p^2 + 4q^2 + r^2 + 4pq + 4qr + 2pr

Explanation:

We need to expand (p+2q+r)^2

We know that (x+y+z) ^2  = x^2 + y^2 + z^2 + 2xy + 2yz + 2xz

Here x = p,y = 2q and z = r

Therefore (p+2q+r)^2 = (p)^2 + (2q)^2 + (r)^2 + 2(p)(2q) + 2(2q)(r) + 2(p)(r)

= p^2 + 4q^2 + r^2 + 4pq + 4qr + 2pr

idk you know what i mean hahahaha

the correct answer is d. the monetary reserve is a set of funds represented in currency, money or similar, saved as a forecast of possible needs or for legal reasons.

the increase or decrease in the monetary base influences in the increase or decrease of the inflation rate. therefore, the excess of monetary reserve will cause the reduction of inflation.