Answer:
(a - b)^2 = 49 - 4b^2 +2ab
Step-by-step explanation:
Given: a^2 + b^2 = 7b (assuming A is really “a”)
b^2 + (2b - a)^2 = 7^2
Find; (a - b)^2
Plan: Use Algebraic Manipulation
Start with b^2 + (2b - a)^2 = 7^2 =>
b^2 + 4b^2 - 4ab + a^2 = 49 by expanding the binomial.
a^2 + b^2 + 4b^2 - 4ab = 49 rearranging terms
a^2 + b^2 -2ab - 2ab + 4b^2 = 49 =>
a^2 - 2ab + b^2 = 49 - 4b^2 +2ab rearranging and subtracting 4b^2 and adding 2ab to both sides of the equation and by factoring a^2 - 2ab + b^2
(a - b)^2 = 49 - 4b^2 +2ab
Double Check: recalculated ✅ ✅
(a - b)^2 = 49 - 4b^2 +2ab
They are both correct. because 1/4 = 3/12.
and there are 4 seasons, so yes, it is 1/4 of the year.
Step-by-step explanation:
<u>Eq1</u>: x+ y =5
<u>Eq2:</u> x- y = 1
Hoping this help u
Answer:
6.25
Step-by-step explanation:
25 divided by 4 = 6.25
-$<span>25 balance does not mean you have </span>$<span>25 credit but that you owe </span>$25, the absolute value of -$<span>25. Just like the absolute value of 5 would be -5. its just the opposite.</span>