Scholarship Exam Preparation App
Class 8 - (Math )
Algebra - Identity
What is the simpler form of (3x + 4y)² - (3x - 4y)²?
a :
24xy
b :
48xy
c :
18x² + 32y²
d :
9x² - 16y²
Explanation :
Let us use the regular equation (a+b)² - (a-b)² = 4ab.
Here a = 3x, b = 4y.
4(3x)(4y) = 48xy
Here a = 3x, b = 4y.
4(3x)(4y) = 48xy