alleryStart learning →Multiply a binomial by a trinomial: (x+2)(x²+3x+1).
Ax³ + 5x² + 7x + 2
Bx³ + 3x² + 7x + 2
Cx³ + 5x² + 7x + 1
Dx³ + 5x² + 3x + 2
Answer & Solution
Correct answer: A. x³ + 5x² + 7x + 2
Distributing x and 2 gives x³ + 3x² + x + 2x² + 6x + 2, which combines to x³ + 5x² + 7x + 2.
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