p2x^2 – 8pqx – 20q^
2 = 0

Solution:
Your question seems to be unclear so i assume that your question is that
Solve the following Quadratic Equations.
p²x² - 8pqx - 20q² = 0
So, solution is-

p²x² - 8pqx - 20q² = 0

⇒ p²x² - 10pqx + 2pqx - 20q² = 0

⇒ px(px - 10q) + 2q(px - 10q) = 0

⇒ (px + 2q)(px - 10q) = 0

⇒ px+2q=0    or    px-10q=0

⇒ x=-2q/p     or     x=10q/p     ......................  Ans

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