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Angelina_Jolie [31]
3 years ago
5

The expression 3(x^2+2x-3)-4(4x^2-7x+5) is equivalent to​

Mathematics
1 answer:
bearhunter [10]3 years ago
7 0

Answer:

\large\boxed{-13x^2+34x-29}

Step-by-step explanation:

3(x^2+2x-3)-4(4x^2-7x+5)\qquad\text{use the distributive property}\\\\=(3)(x^2)+(3)(2x)+(3)(-3)+(-4)(4x^2)+(-4)(-7x)+(-4)(5)\\\\=3x^2+6x-9-16x^2+28x-20\qquad\text{combine like terms}\\\\=(3x^2-16x^2)+(6x+28x)+(-9-20)\\\\=-13x^2+34x-29

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then multiply 0.4 with 30

30*0.4 = 12

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4 years ago
Fifty people enter a contest in which three identical prizes will be awarded. in how many different ways can the prizes be award
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3 years ago
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alina1380 [7]

9514 1404 393

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Step-by-step explanation:

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8 0
3 years ago
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Answer:

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Note: please check the plot attached.

4 0
4 years ago
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