Question

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Answer 1

P= -5x²+ 6x -9
Q=3x - x² - 6
R= 4 - 2x + x²

3P + 6Q - 2 R
3P=
3(-5x²+6x-9)= -15x²+18x-27

6Q
6(3x-x²-6)= 18x-6x²-36

-2R
-2(4-2x+x²)= -8+4x-2x²

Ordenando
-15 x²+18x-27
- 6 x²+18x-36
-2 x² +4x -8
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-23x²+40x-71


R. OPCIÓN C)