if 2x-1/3x=2
then 9x^2+1/4x^2=?
Answers
Answered by
1
Answer:
333/25 is the correct answer and mark me as brainlist and follow me
Answered by
22
Question :- if 2x - 1/3x = 2 then the value of 9x^2 + 1/4x^2 is equals to ??
Solution :-
→ 2x - 1/3x = 2
multiply both sides by (3/2) we get,
→ (3/2)(2x - 1/3x) = 2 * (3/2)
→ (3x - 1/2x) = 3
squaring both sides we get,
→ (3x - 1/2x)² = (3)²
using (a - b)² = a² + b² - 2ab in LHS, we get,
→ (3x)² + (1/2x)² - 2 * 3x * (1/2x) = 9
→ 9x² + (1/4x²) - 3 = 9
→ 9x² + (1/4x²) = 9 + 3
→ 9x² + (1/4x²) = 12 (Ans.)
Similar questions