Question

Verify whether the value of x in p(x) =x² - 1; x = +1 ​

Answer 1

Answer:

1. we have x² - 1
2. we can also write x² - (√1)²
3. So (x + 1) (x - 1) {[ a² -b² ] = [a+ b] [a-b]
4. x = +1 and x = - 1
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