( 3 − 3 . 1 4 ) 2 + ( 3 . 1 4 − 3 ) 2
Evaluate the above expression.
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( 3 − 3 . 1 4 ) 2 + ( 3 . 1 4 − 3 ) 2 = ( 3 - 3.14 ) + ( 3.14 - 3 ) = 3 - 3.14 + 3.14 - 3 = 0
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No, ( 3 − 3 . 1 4 ) 2 = 3 − 3 . 1 4 . The square root does not "cancel" the square, since square root returns only positive values. In fact, ( 3 − 3 . 1 4 ) 2 = ∣ 3 − 3 . 1 4 ∣ = 0 . 1 4 , not − 0 . 1 4 .
( 3 − 3 . 1 4 ) 2 + ( 3 . 1 4 − 3 ) = ( − 0 . 1 4 ) 2 + ( 0 . 1 4 ) 2 = ( 0 . 1 4 ) 2 + ( 0 . 1 4 ) 2 = 0 . 1 4 + 0 . 1 4 = 0 . 2 8
cant we just cancel the roots
since 3 ≤ 3 . 1 4 then 3 − 3 . 1 4 ≤ 0 thus 3 . 1 4 − 3 ≥ 0 Now we have ( 3 − 3 . 1 4 ) 2 + ( 3 . 1 4 − 3 ) 2 . and we know that x 2 = ∣ x ∣ thus ∣ 3 − 3 . 1 4 ∣ + ∣ 3 . 1 4 − 3 ∣ = − ( 3 − 3 . 1 4 ) + ( 3 . 1 4 − 3 ) = 3 . 1 4 − 3 + 3 . 1 4 − 3 = 0 . 2 8
(3.14 - 3)^2 = (3 - 3.14)^2 = (0.14)^2
So
square root of [(3 - 3.14)^2] + square root of [( 3.14 - 3)^2] = (0.14) + (0.14) = 0.28
(3 - 3.14) + 3.14 - 3) = -.14 + .14 So root of (3 - 3.14)^2 + root of (3.14 - 3)^2 = root of (-.14)^2 + root of(.14)^2 = .14+.14 = .28
± (3-3.14) ± (3.14-3)
If we consider both signs as '+' or '-', then we get zero.
If we consider opposite signs then we get 0.28 as the solution.
Both solutions are possible but one matching with the option is considered.
Just to support ±;
√16 = +4 and -4, or we can say ±4
The first part of the sum = 0.14 = The second part of the sum.
Thus the answer is 0.14 + 0.14 = 0.28
should be 0 3-3.14+3.14-3=0 squa re root of square of a number is simply the number
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no sir square root of a negative number is not the number itself sir...........it is a complex number............that is why we first subtract then square it up so that it becomes +ve and then take the root of it...........then the number is "ITSELF'......not directly. Or else we can take the square root of the square of a number as the absolute value of the number i.e. the Modulus of the number irrespective of the sign of the number. Then the number is "ITSELF".
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x 2 = ∣ x ∣
∣ 3 − 3 . 1 4 ∣ + ∣ 3 . 1 4 − 3 ∣ = 0 . 1 4 + 0 . 1 4 = 0 . 2 8