Question

Find the value of x if pqx = (3p+q)² – (3p - 9)²?​

Answer 1

x=12

Step-by-step explanation

We know that, a2−b2=(a+b)(a−b)

By using this formula,

pqx=[(3p+q)+(3p—q)][(3p+q)−(3p−q)]

pqx=[(3p+q+3p—q)][(3p+q−3p+q)]

p6x=(6p)×(2q)

x=pq6p×2q=pq(6×2)pq12x=12