F(x)=x^2+11x+20, find x when f(x)=−8
2 answers:
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Answer:
Step-by-step explanation:
It can work well to identify 4th powers under the radical, then remove them.
_____
The applicable rules of exponents are ...
1/a^b = a^-b
(a^b)(a^c) = a^(b+c)
The x-factors simplify as ...
x^6/x^4 = x^(6-4) = x^2
The y-factors simplify as ...
y/y^5 = 1/y^(5-1) = 1/y^4
The constant factors simplify in the usual way:
24/128 = (8·3)/(8·16) = 3/16
Answer:
7.5
Step-by-step explanation:
= 0.5477225575
Multiply it by 5
= 2.738612788
Square it
7.5
Hope this helped. :)