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Which expression is equivalent to 3x(bx + 10)–(x^2-5x+c)? A. -3bx^2+25x+c B. -x^2(3b+35)x-c C. (3b-1)x^2-5x+10+c D. (3b-1)x^2+35x-c
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35 votes
Which expression is equivalent to 3x(bx + 10)–(x^2-5x+c)?

A. -3bx^2+25x+c
B. -x^2(3b+35)x-c
C. (3b-1)x^2-5x+10+c
D. (3b-1)x^2+35x-c

User Brice Favre
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1 Answer

13 votes
13 votes

Answer:

The choice D.


(3b - 1) {x}^(2) + 35x - c

Explanation:


3x(bx + 10) - ( {x}^(2) - 5x + c) \\ \\( 3b {x}^(2) + 30x) + ( - {x}^(2) + 5x - c) \\ \\ 3b {x}^(2) - {x}^(2) + 35x - c \\ \\ = (3b - 1) {x}^(2) + 35x - c

I hope I helped you^_^

User Minsky
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