Factoring x² - 18x -63

Answer 1

81

Answer 2

You must find two factors of -63, that add up to -18. Since the third term is negative, you write down:

(x + ___) (x - ___)

and then look for such a number. In this case, the solution is:

(x + 3) (x - 21)

Since the product of the constant terms is -63, and their sum is -18.

You must find two factors of -63, that add up to -18. Since the third term is negative, you write down:

(x + ___) (x - ___)

and then look for such a number. In this case, the solution is:

(x + 3) (x - 21)

Since the product of the constant terms is -63, and their sum is -18.

You must find two factors of -63, that add up to -18. Since the third term is negative, you write down:

(x + ___) (x - ___)

and then look for such a number. In this case, the solution is:

(x + 3) (x - 21)

Since the product of the constant terms is -63, and their sum is -18.

You must find two factors of -63, that add up to -18. Since the third term is negative, you write down:

(x + ___) (x - ___)

and then look for such a number. In this case, the solution is:

(x + 3) (x - 21)

Since the product of the constant terms is -63, and their sum is -18.

Answer 3

You must find two factors of -63, that add up to -18. Since the third term is negative, you write down:

(x + ___) (x - ___)

and then look for such a number. In this case, the solution is:

(x + 3) (x - 21)

Since the product of the constant terms is -63, and their sum is -18.