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which of the following will you multiply x+2 to getthe product x²+6x+8
A. x+6 B. x+4 C. x+3 D.x+2

2. add 2x²+3x-4 and 2x²-9x-4
A.4x²+6x-8 B. 4x²+6x+8
C.4x²-6x-8 D. 4x²-6x+8

3. find the difference (11x²-4x-5)-(-11x²+4x+5x
A. 0 B. -22x²-8x-10
C. 22x²-8x-10 D. 22x²+14x-10​