alleryStart learning →What is the expansion of (x + a)(x + b)?
Ax² + (a+b)x + ab
Bx² + (a−b)x + ab
Cx² + abx + a+b
Dx² + (a+b)x − ab
Answer & Solution
Correct answer: A. x² + (a+b)x + ab
The cross-terms ax and bx combine to (a + b)x, while the constant product is ab.
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