Solve by Factoring x^2+14x+45=0

$x^{2} + 14 x + 45 = 0$

Step 1

Factor $x^{2} + 14 x + 45$ using the AC method.

Consider the form $x^{2} + b x + c$ . Find a pair of integers whose product is $c$ and whose sum is $b$ . In this case, whose product is $45$ and whose sum is $14$ .

$5, 9$

Write the factored form using these integers.

$(x + 5) (x + 9) = 0$

Step 2

If any individual factor on the left side of the equation is equal to $0$ , the entire expression will be equal to $0$ .

$x + 5 = 0$

$x + 9 = 0$

Step 3

Set $x + 5$ equal to $0$ and solve for $x$ .

Set $x + 5$ equal to $0$ .

$x + 5 = 0$

Subtract $5$ from both sides of the equation.

$x = - 5$

Step 4

Set $x + 9$ equal to $0$ and solve for $x$ .

Set $x + 9$ equal to $0$ .

$x + 9 = 0$

Subtract $9$ from both sides of the equation.

$x = - 9$

Step 5

The final solution is all the values that make $(x + 5) (x + 9) = 0$ true.

$x = - 5, - 9$

Solve by Factoring x^2+14x+45=0

Related Questions

Support LCMGCF.com by disabling your adblocker.