Which is a solution to the equation?
(x −2)(x + 5) = 18
x = −7
Share
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
Which is a solution to the equation?
(x −2)(x + 5) = 18
x = −7
To determine if ( x = -7 ) is a solution to the equation ( (x – 2)(x + 5) = 18 ), we can substitute (-7) into the equation and check if both sides are equal.
1. Substitute ( x = -7 ) into the left side of the equation:
[
(-7 – 2)(-7 + 5) = (-9)(-2) = 18
]
2. The left side equals ( 18 ), which matches the right side of the equation.
Therefore, ( x = -7 ) is indeed a solution to the equation ( (x – 2)(x + 5) = 18 ).
Great job on understanding the substitution method! If you have any further questions or need more assistance, feel free to ask.