If A= 2x2 –x -2 and B= 4(2x-1) + 3x + 11. Find A+2B.
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Answer:
22+21x
Step-by-step explanation:
=a+2b
= 2×2-x-2 + 2(4(2x-1)+3x+11)
= 2×2-x-2 + 2(4×2x -1 +3x +11)
= 2×2-x-2 + 2×8x -2×1 +2×3x +2×11
= 4-x-2 +16x -2 +6x +22
= 4-2-2+22 -x+16x+6x
= 4-4+22+15x+6x
= 22+21x. is the answer
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