2018年4月5日 · I tried this: Let us multiply and divide by 100 we get: 100/100*0.49=49/100 so the square root becomes: sqrt(49/100)=7/10

2018年3月9日 · 0,7. See below sqrt(0,49)=sqrt(49/100)=sqrt49/sqrt100=7/10=0,7

2017年1月1日 · sqrt(-49) = 7i A square root of a number n is a number x such that x^2 = n Note that if x is a Real number then x^2 >= 0. So any square root of -49 is not a Real number. In …

There are two common ways to simplify radical expressions, depending on the denominator. Using the identities #\sqrt{a}^2=a# and #(a-b)(a+b)=a^2-b^2#, in fact, you can get rid of the …

2016年7月22日 · sqrt49 = sqrt (7xx7) = sqrt 7^2 = 7 The square root of a number is that number which, when multiplied by itself will equal the original number. 4 xx 4 = 16 rArr 4^2 = 16 This …

Guess what the square root of the irrational number is. For example, if your irrational number is 2, you might guess 1.2. Divide the initial irrational number by the guessed number. For example, …

2016年3月17日 · x_(1,2)=+-7 You could use several methods. The fastest is: x^2=49 :.sqrt(x^2)=+-sqrt(49) x_(1,2)=+-7 I'd prefer to factorize the equation using the Square …

Completing the square is a method used to solve a quadratic equation, #ax^2+bx+c#, where #a# must be #1#. The goal is to force a perfect square trinomial on one side and then solving for …

2017年1月12日 · The length of a side is 9cm. The length of the diagonal is 12.73cm. The formula for area of a square is: s^2=A where A=area and s=length of a side. Hence: s^2=81 s=sqrt81 …