Question

The value of a, if the value of -x2+3x-a is equal to 8, whenx=-1,is​

Answer 1

Answer:

23x=82x+1  

⟹23x=(23)2x+1  

⟹23x=(23x)2+1  

And now we have the equation in a more manageable form and something about it resembles a quadratic equation but not with those exponents so the next step is:

Let A=23x  

Which leaves us with:

A=A2+1  

Rearranging and solving for  0:  

A2−A+1=0

Step-by-step explanation:

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