Question

Find [3st+4t]²-[3st-4t]²​

Answer 1

Answer:

(3st+4t)²-(3st-4t)²

=4(3st)(4t).

[(a+b)]²- (a-b)² =4ab]

ans- 48st²

Answer 2

Answer:

Given :-

➪ (3st + 4t)² - (3st - 4t)²

Solution :-

➪ (3st + 4t)² - (3st - 4t)²

➭ {(3st + 4t) + (3st - 4t)} {(3st + 4t) - (3st - 4t)}

➭ (3st + 4t + 3st - 4t) (3st + 4t - 3st + 4t)

➭ (6st) (8t)

➭ 48st²

∴ The value of (3st + 4t)² - (3st - 4t)² is 48st²

Formula used :-

➪ a² - b²

➭ (a + b) (a - b)