Respuesta :

Answer:

x = 7

Explanation:

1. We begin by expanding the brackets:
4x^2 + 11x - 4x^2 - 28 = 49

2. Cancel out the 4x^2:
11x - 28 = 49

3. Cancel the 28 on both sides:
11x = 77

4. Divide by 11 on both sides:
x = 7


Hope this helped!

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