Algebra Shortcut Trick for Exams
Question
How much more is (37 + 29)2 than 372 + 292?
Key Identity (Shortcut Formula)
(a + b)2 = a2 + b2 + 2ab
Therefore,
(a + b)2 − (a2 + b2) = 2ab
Apply the Formula
Here, a = 37 and b = 29
Answer = 2 × 37 × 29
Correct Option
(A) 2 × 37 × 29
Exam Tip:
Whenever you see a question like:
"How much more is (a+b)² than a² + b²"
👉 The answer is always 2ab.
Whenever you see a question like:
"How much more is (a+b)² than a² + b²"
👉 The answer is always 2ab.
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