$\bf \lim\limits_{x\to 9}~\cfrac{x^2-81}{x-9}\implies \cfrac{\stackrel{\textit{difference of squares}}{x^2-9^2}}{x-9}\implies \cfrac{\underline{(x-9)}(x+9)}{\underline{(x-9)}}
\\\\\\
\lim\limits_{x\to 9}~x+9\implies (9)+9\implies 18$

3 0

3 years ago

F(×)=3×/2+× find f(-4)

3241004551 [841]

Answer:

f(x)=6

Step-by-step explanation:

3(-4)/2+(-4)

-12/-2

f(x)=6

4 0

3 years ago

Read 2 more answers

145 300 610 1230

Vlad1618 [11]

Multiplying by 2 and then adding 10 145*2=290+10=300
300*2=600+10=610
610*2=1220 + 10=1230
x=2 y=10
x+y=12

5 0

4 years ago

Is this true or false?

Degger [83]

Step-by-step explanation:

false

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.....

3 0

3 years ago