0
Why is square root of a plus square root of b not equal square root of a plus b?
Wiki User
∙ 12y ago
Suppose that in the problem you describe, instead of a and b, we talk about actual numbers, such as 4 and 9. The square root of 4 is 2, and the square root of 9 is 3; so if we add the square root of 4 and the square root of 9, that is 2 + 3 = 5. Now, suppose we add 4 + 9 and get 13. The square root of 13 is just over 3.6, which you will note is considerably less than 5. This is because multiplication is not a linear process; as you multiply larger numbers, the total increases more rapidly than if you were merely adding numbers. A square root is the number which, multiplied by itself produces the number of which it is the square root, so it is basically connected to multiplication, not addition. Hence, you can't get the same result through addition.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
What is the square root of a squared plus b squared?
It's the square root of a2+b2. It cannot be simplified. It is NOT a+b. The answer is c square.
B is a square root of a if?
if B*B = a, then B is square root of a
Give example of a quadratic equations?
X2+5x-6. a=1, b=5, and c=-6 The formula is: -b plus or minus the square root of b squared minus 4ac all over 2a. -b+square root of b2-4ac ---- 2a -5 plus or minus the square root of 5 squared minus 4(1)(-6) -5 plus or minus the square root of 25-4(-6) -5 plus or minus the square root of 25+24 -5 plus or minus the square root of 49 -5 plus or minus 7 Here is where you split into two different answers: Number 1: -5 plus 7= 2 Number 2: -5 minus 7= -12 Your answer is X=2, -12
Does the square root of ab equal square root of a Times Square root of b?
Yes, that is correct. It is one of the basic properties of surds, and is used in many identities and some equations, to simplify and calulate and prove.
A plus b the whole square?
a square plus 2ab plus b square
Can the square root of a and square root of b equal the square root of A plus B?
sqrt(a)+sqrt(b) is different from sqrt(a+b) unless a=0 and/or b=0. *sqrt=square root of
How do you find the square root of a fraction with variables?
The square root of a/b is equal to the square root of a divided by the square root of b. I hope this helps you.
When a squared plus b squared equals c squared what is the square root of the square root of the square root of a squared squared squared plus b squared squared squared?
Since a squared plus b squared equals c squared, that is the same as c equals the square root of a squared plus b squared. This can be taken into squaring and square roots to infinity and still equal c, as long as there is the same number of squaring and square roots in the problem. Since this question asks for a and b squared three times, and also three square roots of a and b both, they equal c. Basically, they cancel each other out.
If an equals 2b then does the square root of an equal the square root of b times 2?
Yes, the answer is the square root of 2b.
What is the square root of a squared plus b squared?
It's the square root of a2+b2. It cannot be simplified. It is NOT a+b. The answer is c square.
What is the hypotanuse of a triangle?
It's the longest side. If a and b are the shorter sides, the square root of a squared plus b squared will equal the length of the hypotenuse
Why does 256 plus b squered equal 400?
400-256 = b^2 144 = b^2 144^-2 [square root of 144] = b ? = b you can do the rest!
If a squared plus b squared equals c squared why doesn't a plus b equal c?
Because it is mathematically incorrect. a^2 + b^2 = c^2 Take square root of both sides. SQRT (a^2 + b^2) = c So you see, it is not a plus b equal c.
What is formula for a plus b whole square?
(A+B)2 = (A+B).(A+B) =A2+AB+BA+B2 =A2+2AB+ B2 So the Answer is A + B the whole square is equal to A square plus 2AB plus B square. Avinash.
B is a square root of a if?
if B*B = a, then B is square root of a
Solve for a c equals the square root of a squared plus b square?
This question cannot be answered. You will have to give me the number to the square root. * * * * * a = ±sqrt(c^2 - b^2)
What is the square root of a negative number plus the square root of a negative number?
Nothing. You cannot have a square root of a negative number. The square root of negative one is called i, but i is an imaginary number. It does not exist and does not follow the properties of real numbers. (For example, if a and b are positive, then the square root of a times the square root of b is the square root of ab. But the square root of -7 is not the square root of 7 times i.)
