Question

compute the following..(x+2)²​

Answer 1

Answer:

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Step-by-step explanation:

(x+2)2=20

Now for(g(x))2=f(a) the solution would be g(x)=±f(a)−−−−√

So we can start with x+2=±20−−√

Since 20−−√=25–√ and −20−−√=−25–√, we rewrite the equation as x+2=±25–√

Subtract 2 from both sides: x+2−2=±25–√−2→x=±25–√−2

∴x=±25–√−2