9th grade math
posted by trent .
x^2+8x+16=25

did you notice the left side is a perfect square?
(x+4)^2 = 25
take √ of both sides
x+4 = ± 5
x = 4 ± 5
= 1 or 9
Respond to this Question
Similar Questions

9th grade classes
I'm choosing which classes I want to take for freshman year but I'm not sure what I need to take. Right now I've only decided on Geometry and English 1. What science do I take for 9th grade? 
9th Grade Courses
For 9th grade science, which would be easier to take? 
11th grade
The students of litchfield High school are in grades 9,10,11,12. Of the students , 1/4th are in 9th grade, 1/3rd are in 10th grade, 1/6th is in 11th grade and there are 300 in the 12th grade, how many students are there all together? 
9th grade
I'm doing this word search for my 9th grade honors physical science class, and i don't understand one thing. it says 'blue, striped and round are examples of this' when we're talking about matter and phases of matter and density/mass/weight/volume. … 
english
 Computers  English  Foreign Languages  Health  Home Economics  Math  Music  Physical Education  Science  Social Studies GRADE LEVELS  Preschool  Kindergarten  Elementary School  1st Grade  2nd Grade  3rd Grade  4th … 
9th grade algebra/Ms Sue
Okay Ms. Sue. I am in 8th grade but I am taking Algebra with 9th graders. I am very confused with my previous problem. I have asked my Dad but we are both getting confused. Now I have come up with 22. Is this my correct answer? 
9TH GRADE MATH
IF C=2M+D THEN M= 
Biology
Is 9th grade biology hard? Is it interesting...? 
math
Riding on a school bus are 20 students in 9th grade, 10 in 10th grade, 9 in 11th grade, and 7 in 12th grade. Approximately what percentage of the students on the bus are in 9th grade? 
math
The students at Millerville High School were surveyed about their favorites type of music. The results are in the table. to the nearest whole percent, what percent of the students who chose country as their favorite are in 9th grade?