232k views
3 votes
Solve for x. Enter the solutions from least to greatest. x^2 + 18x + 80 = 0

1 Answer

5 votes
Answer: -10, -8

Why:

X^2 + 18x + 80 = 0

(X + ?) (X + ?) = 0

Two numbers that add to equal +18 and multiplies to equal +80 are 8 and 10

(X + 8)(X + 10) = 0

Now we can separate what is in the parentheses into possible cases

X + 8 = 0
X = -8

X + 10 = 0
X = -10



User Smart Solutions
by
7.9k points