Question

which law
2x+3=7x-5
By
be written
as
7x-5= 2x+3​

Answer 1

Answer:

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Step-by-step explanation:

f(x)=2x3+7x−5

x=2(f−1(x)3)+7f−1(x)−5

f−1(4)=?

4=2(f−1(4)3)+7f−1(4)−5

2(f−1(4)3)+7f−1(4)−9=0

Let f−1(4)=t

2t3+7t−9=0

2t3−2+7t−7=0

2(t3−1)+7(t−1)=0

2(t−1)(t2+t+1)+7t−1=0

(t−1)(2t2+2t+2+7)=0

t=12t2+2t+9=0

So, f−1(4)=1