Answer:
x^2 +4x+4 = 4
Step-by-step explanation:
To complete the square take the coefficient of the x term
4
Divide by 2
4/2 =2
Square it
2^2 =4
Add it to both sides of the equation
x^2 +4x+4 = 4
Answer:
See below.
Step-by-step explanation:
7x^2 = 343 Divide both sides by 7
7x^2/7 = 343/7
x^2 = 49 Take the square root of both sides.
sqrt(x^2) = sqrt(49)
x = +/- 7
Answers
I think the last two are kind of iffy. I'm not sure you can call them solutions, but the question probably assumes they are. If you use all four answers and get it wrong, them submit +7 and - 7.
It's 9. (I don't use inches in Canada but I made everything in inches so hopefully it helped)
3/7 and 1 1/2
Now look at the two denominators: 7 and 2.
Because 7 and 2 are relatively prime, their least common multiple is:
7*2= 14
Therefore, 14 is a common denominator for 3/7 and 1 1/2.
Hope this helps~
