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I expect the second term is NOT 6x15in which case, there is an arithmetic symbol missing between 6x and 15.
x2+ 6x + 9 is the completed square so you will need to work out what needs to be added: depending on -15 or +15.
I expect the second term is NOT 6x15in which case, there is an arithmetic symbol missing between 6x and 15.
x2+ 6x + 9 is the completed square so you will need to work out what needs to be added: depending on -15 or +15.
I expect the second term is NOT 6x15in which case, there is an arithmetic symbol missing between 6x and 15.
x2+ 6x + 9 is the completed square so you will need to work out what needs to be added: depending on -15 or +15.
I expect the second term is NOT 6x15in which case, there is an arithmetic symbol missing between 6x and 15.
x2+ 6x + 9 is the completed square so you will need to work out what needs to be added: depending on -15 or +15.
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RossI expect the second term is NOT 6x15in which case, there is an arithmetic symbol missing between 6x and 15.
x2+ 6x + 9 is the completed square so you will need to work out what needs to be added: depending on -15 or +15.
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What number must you add to complete the square x2 minus 4x equals 1?
4
What number do you add to complete the square x2-19?
-17
What number must you add to complete the square of x2 12x -9?
The idea is to take half the linear part (12, in this case), then square it. The constant part must be equal to this result.
What number must you add to complete the square x2 plus 16x equals -7?
square root -5 minus 14 or - square root -5 minus 14
How can you tell by looking at the prime factors of 17640 that the square root of 17640 is not a whole number?
Write the prime factors as powers. In a square number, each prime number appears an even number of times - i.e., an even power. Examples: 4 = 22 (even power, this is a square) 144 = 24 x 32 (all powers are even, this is a square) 12 = 22 x 3 or 22 x 31 (3 has an odd power so it is not a square) (If a number is a perfect square, that is equivalent to saying that its square root is a whole number.) * * * * * In this case there is a particularly fast method. The number ends in 0 so 10 must be a factor of the number. That is to say, 2 and 5 must be prime factors of the number. If it is a square then 22 and 52 must be factors of the number ie 22 x 52 = 100 must be a factor. But if 100 is a factor, the number must end in 00. It does not so it cannot be a square.
