posted by Carol on .
I can understand this if the steps are shown to me. Please help me explain it to my daughter!
One number is 8 more than another number. Their product is 273.
I got this far.
X(X + 8) = 273
X^2 + 8X = 273
Factor 273 into prime factors: 3 * 7 * 13. What combination of factors would give a difference of 8? In this case, it would be 21 and 13.
If you want to use the equation:
X^2 + 8X - 273 = 0
(X + 21)(X -13) = 0
X = 13
X = I-21I (absolute value)
I hope this helps. Thanks for asking.