Answer:
It is a perfect square expression.
It factors to (x+2)^2
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Explanation:
The general format for a perfect square is
(a+b)^2 = a^2 + 2ab + b^2
Which can be seen through the use of the FOIL rule.
Compare x^2+4x+4 with a^2+2ab+b^2, and we have these three equivalences:
- x^2 = a^2 .... first terms
- 4x = 2ab .... middle terms
- 4 = b^2 .... last terms
Since x^2 = a^2, we can apply the square root to both sides to get a = x. Similarly, 4 = b^2 leads to b = 2. We could get b = -2, but that would mean 2ab = 2x*(-2) = -4x instead of 4x. So we'll stick with b = 2 instead.
Because a = x and b = 2, we then can say:
(a+b)^2 = a^2 + 2ab + b^2
(x+2)^2 = x^2 + 2*x*2 + 2^2
(x+2)^2 = x^2 + 4x + 4
Showing that x^2+4x+4 factors to (x+2)^2.
Answer:
dan - 42:7 / 6:1
mia - 48:6 / 8:1
Step-by-step explanation:
mia has the greater sleep to days ratio because she sleeps 8 hours a day, whereas, dan sleep 6 hours a day. as you can see, the ratios can be ordered from greatest to least making mia have the greater ratio.
hope this helps :3
Sarah's 10 years old.
Antonio's 2 years old.
2 x 2 = 4
10 x 3 = 30
4 + 30 = 34
2 x 5 = 10
847 s - 47 I think that’s what it is
