2
5*root(21^2) = 5*21 = 105
52 = 25Root 25 = 525 - 5 = 20
5 squared is 25 4 squared is 16 25-16= 9 the square root of 9 is 3.
b is the square root of 5/3
2
The square root of 5 squared is 5, which is a rational number.
First, the problem can be rewritten: 2(x^.5) From that step, take the derivative: 2(.5x^-.5) Finally simplify by distribution: x^-.5
5
30
2square times 6 cube is 20
b over the square root of 5 The square root of 5b squared is 5b, and the simplified form of the square root of 125 is 5 root 5. The 5s then cancel out leaving b over the square root of 5.
5*root(21^2) = 5*21 = 105
5 Square root 3. square root 27 = square root 9*3 = 3square root 3 3square root3 + 2square root3 = 5Square Root3 because both have a square root 3.
We can rewrite this as 2x2 -6x-1=0 Now if you want to solve this, you can use the quadratic equation. a=2 b=-6 c=-1 So x= [6+ or - ( square root of (36+8) ]/ 4 = [6+ or - (2square root of (11))/]4
52 = 25Root 25 = 525 - 5 = 20
5 squared is 25 4 squared is 16 25-16= 9 the square root of 9 is 3.