Tom simplified an expression in three steps, as shown below: Step 1 Step 2 Step 3
x?y8
= x
yx4
x®y2
,6,16
x?y8
-14 y²
Which is the first incorrect step and why?
Step 1: all the exponents are increased by 4
Step 2: the exponents of the same base are added during multiplication
о
Step 3: the exponents of the same base are subtracted during division
Step 3: all the exponents are added during division