Solve x2 + 12x = -20 by completing the square.
1.
Add to both sides of the equation. The value of in this equation is
2. Write the left side of the equation as a binomial squared. The left side of the equation becomes
3. Use the square root property of equality.
4. Isolate the variable: x =
Done

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?

Is there a picture?