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Which expression is equivalent to (x²+3x-4)(x-5) 1) x³+8x²-19x+20 2) x³-2x²-19x+20 3) x³-2x²-11x+20 4) x³-8x²-11x+20

Which expression is equivalent to (x²+3x-4)(x-5) 1) x³+8x²-19x+20 2) x³-2x²-19x+20 3) x³-2x²-11x+20 4) x³-8x²-11x+20
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3 votes
Which expression is equivalent to (x²+3x-4)(x-5)

1) x³+8x²-19x+20
2) x³-2x²-19x+20
3) x³-2x²-11x+20
4) x³-8x²-11x+20

User Jaime
by
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1 Answer

4 votes

(x^2+3x-4)(x-5)=x^3-5x^2+3x^2-15x-4x+20=\\ \\=x^3-2x^2-19x+20\ \ \ \Rightarrow\ \ \ Ans.\ B
User Andrewhl
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