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If ƒ(x ) = x 2 + 1 and g(x ) = 3x + 1, find [ƒ(2) - g(1)] 2 <-- is to the power of two do i solve for fx and gx first and then use the power or do i multiply the brackets inside to the power first?

Guest Aug 15, 2017
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Relations and functions

If ƒ(x ) = x 2 + 1 and g(x ) = 3x + 1, find [ƒ(2) - g(1)] 2 <-- is to the power of two do i solve for fx and gx first and then use the power or do i multiply the brackets inside to the power first?

 

\([f(x)-g(x)]^2 \)

\(=[f(1)-g(2)]^2\)

\(=[(1^2+1)-(3\cdot2+1)]^2 \)

\(=[2-7]^2\)

\(=[-5]^2\)

\(=25\)

Do solve for fx and gx first and then use the power.

laugh  !

asinus  Aug 15, 2017

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