Which TWO expressions are equivalent to<em> </em><em>(x - y) </em>2/3 - 3/4 <em>(y-x)</em>
Answer:±2 and±9
Step-by-step explanation:
±√(4) = ±2
±√(81) = ±9
Answer:
C
Step-by-step explanation:
Trigonal Planar is 3 atoms bonded to 1 atom with no lone pairs, the bond angle is 120 degrees and the shape is flat.
When you add and subtract be sure that the two fractions have the same denomination, and then add/subtract the numerators. I always do cross multiplication of the two fractions to obtain the same denominators-although there are various ways to do this.
Multiplying fractions is simply straight across.
Dividing fractions:
Keep, change, flip.
Keep the first fraction the same, change the sign to its opposite (ex:division flips to multiplication), and flip the numerator and the denominator of the second fraction. Then, preform the arithmetic from your "new" problem.
S=-1 see attachment for explanation
