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fenix001 [56]
3 years ago
12

B. Multiply (3 x - 1) by (x + 1)​

Mathematics
2 answers:
kramer3 years ago
5 0

Answer:

(3x - 1)(x + 1) = 3x² + 2x - 1

Step-by-step explanation:

\rm \longrightarrow (3x - 1)(x + 1) \\  \\  \rm \longrightarrow 3x(x + 1) - 1(x + 1) \\  \\  \rm \longrightarrow (3x)(x) + (3x)(1) + ( - 1)(x) + ( - 1)(1) \\  \\  \rm \longrightarrow 3 {x}^{2}  + 3x + ( - x ) + ( -  1) \\  \\  \rm \longrightarrow 3 {x}^{2}  + 3x - x - 1 \\  \\  \rm \longrightarrow 3 {x}^{2}  + 2x - 1

kotegsom [21]3 years ago
5 0

Answer:

(3x - 1)(x + 1) = 3x² + 2x - 1

Step-by-step explanation:

got it right on edge

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