Which of the following equations have a zero at x = 1 1. y=x^2+3x-4
2. y = x^2+ 2x + 1
3. y = x^2 – 7x + 8

Answer choices:
All of them
1
1 and 2
3
1 and 3
2 and 3
2​

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Give the domain and range. a. domain: {0, 2, 4}, range: {2, 6, 10} b. domain: {0}, range: {2} c. domain: {2, 6, 10}, range: {0, 2, 4} d. domain: {2}, range: {0}