I have a test tomorrow and we ran out of time in class today...the problem I am having is...
If 5 is added to the square of a number, the result is 21. Find the number.
x(x+5)=21
I think the answer is 4,-4 but do not really know how to work the problem out! Please help. And thank you in advanced. I am a bit frustrated...
The way I did it is...21-5 is 16, the square of 16 is 4. which makes it 4, -4
If 5 is added to the square of a number, the result is 21. Find the number.
x(x+5)=21
I think the answer is 4,-4 but do not really know how to work the problem out! Please help. And thank you in advanced. I am a bit frustrated...
The way I did it is...21-5 is 16, the square of 16 is 4. which makes it 4, -4