Q: What is the square root of x square plus 8x plus 15 equals 0?

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15

15*15=225

True! Apex =)

sqrt(15) + sqrt(25) = 5 + sqrt(15) = 8.873 (using principal roots only).

You are looking for the square root of 225 which is 15. (15x15=225)

Related questions

The square root of 225 is 15. This is because the square root of a number is a value that, when multiplied by itself, gives the original number. In this case, 15 multiplied by 15 equals 225. Therefore, the square root of 225 is 15.

4.7916427e+21

25x (square) plus 40 plus 15 equals 680.

It is irrational

15

15*15=225

True! Apex =)

x = 3

sqrt(15) + sqrt(25) = 5 + sqrt(15) = 8.873 (using principal roots only).

x²+2x-15=0 x1=-2/2 - Square root of ((2/2)²+15) x1=-1-4 x1=-5 x2=-2/2 + Square root of ((2/2)²+15) x2=-1+4 x2=3

15

Two times the square root of 15 is the square root of 60. This is not a perfect square so we can only approximate it. It is about 7.75. Numbers such as 2 times the square root of 15 are known as irrational numbers since they cannot be written as a ratio or fraction.