tabisulaprinces2084
12.01.2020 •
Mathematics
Simplify the rational expression. find all numbers that must be excluded from the domain of the simplified rational expression.
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Ответ:
N= x²+4x+4 = (x+2)²
D = x²-4 =(x-2)(x+2)
N/D = (x+2)²/(x-2)(x+2); simplify by (x+2)
N/D = (x+2)/(x-2)
Domain of x ={x∈R≠3} ; in short x =( -2) should be excluded
Ответ:
19.8 - 16.2 = 3.6
Paloma is 3.6 seconds faster than Savannah in the 100-meter dash.