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4 votes
4 Which trinomial is equivalent to

3(x-2)²-2(x-1)?
1) 3x²-2x-10
2)
3x² - 2x - 14
3)
3x² - 14x+10
4)
3x²-14x+14

User Dude Bro
by
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1 Answer

4 votes

Answer: 4) 3x²-14x+14

Step-by-step explanation:

3(x-2)²-2(x-1)

Use the binomial theorem (a−b)² = a² - 2ab + b² to expand (x-2)².

3(x²-4x+4)-2(x-1)

Use the distributive property to multiply 3 by x²-4x+4.

3x²-12x+12-2(x-1)

Use the distributive property to multiply −2 by x−1.

3x²-12x+12-2x+2

Combine −12x and −2x to get −14x.

3x²−14x+12+2

Add 12 and 2 to get 14.

3x²-14x+14

It is 3x²+14x+14, the trinomial equivalent to 3(x-2)²-2(x-1). OPTION 4.

User Barkeem
by
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