Seth makes an array with 6 rows and 9 columns. Miri makes an array of 9 rows and 6 columns.
1 answer:
You might be interested in
The trick is to exploit the difference of squares formula,
Set a = √8 and b = √6, so that a + b is the expression in the denominator. Multiply by its conjugate a - b:
Whatever you do to the denominator, you have to do to the numerator too. So
Expand the numerator:
So we have
But √12 = √(3•4) = 2√3, so