4. simplify the expression:
7x2 - 6+4x +7-5x² + x
a. 2x² + 5x +1
b. 2x² + 4x +1
c. 12x? +5x+1
d. 12x2 + 4x +1

A) 2x^2+5x+1

Step-by-step explanation:

7x^2-6+4x+7-5x^2+x

7x^2-5x^2+4x+x-6+7

2x^2+5x-6+7

2x^2+5x+1

56

step-by-step explanation:

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