x2+10x+9=0
step 1:
step 2:
Home
/
x2+10x+9=0 step 1: step 2:
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Solve by Factoring
: x² + 10x + 9 = 0
Step 1:
Consider the form x² + bx + c. Find a pair of integers whose product is c and whose sum is b. In this case, whose product is 9 and whose sum is 10.
1,9
Step 2:
Write the factored form using these integers.
( x + 1 )( x + 9 ) = 0
x + 1 = 0
x + 9 = 0
Step 3:
Set x + 1 equal to 0 and solve for x
Set x + 1 equal to 0
x + 1 = 0
Subtract 1 from both sides of the equation.
x + 1 - 1 = 0 - 1
x = -1
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 - 9 = 0 - 9
x = -9
THE FINAL ANSWER IS
x = -1, -9.