7. If A = 3 + 5x + 7x2, B = - 4 - 7x + x?
C = 4 + 5x - 8x?, find A + B + C.
Answers
Answered by
4
Step-by-step explanation:
=A+B+C
=(3+5x+7x²)+(-4-7x+x)+(4+5x-8x)
=(7x²)+(5x-7x+x+5x-8x)+(3-4+4)
=7x²(+11x-15x)+(3)
=7x²-4x+3
Answered by
2
Answer:
7x² -4x+3
Step-by-step explanation:
I hope my answer is correct. if not please tell mistake.
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